Troubleshooting Mercedes-Benz Issues: The Ultimate Guide to OBD-II Codes Mercedes and Mercedes OBD Code List

In this guide, we will dive into the world of OBD-II codes specific to Mercedes-Benz models, exploring their meanings, the common problems they indicate, and how to effectively troubleshoot these issues. Our goal is to provide you with a deeper understanding of your Mercedes-Benz, enhancing your ability to maintain its performance and prolong its lifespan.

To navigate this comprehensive overview of Mercedes fault codes and trouble codes, you can use the following links to jump directly to a specific section of interest:
P0400s | P0500s | P0600s | P0700s | P0800s | P1000s-P2000s
Body (B####) | C#### | U####

Additionally, for quick access to a particular trouble code, we recommend utilizing the search function in your browser. Press CTRL+F (or Command+F on a Mac) and enter the specific code you’re searching for. This method is particularly useful if you already know the exact code you wish to investigate further.

For every Mercedes-Benz owner and service center, the On-Board Diagnostic System, commonly known as OBD-II, is an essential tool for ensuring the health and optimal performance of your vehicle.

Introduced in the mid-1990s, OBD-II has become a standardized diagnostic system across all vehicles, providing a wealth of information about a car’s engine and other vital systems. This technology is particularly crucial in Mercedes-Benz cars, renowned for their advanced engineering and sophisticated systems. When a Mercedes-Benz vehicle experiences a malfunction or irregularity, the OBD-II system generates specific codes, known as fault codes or error codes. These codes are critical clues that help diagnose and resolve issues within the vehicle, ensuring that your Mercedes-Benz continues to operate with the efficiency and reliability that the brand is known for.

For service centers, these OBD-II codes offer a starting point for diagnostics, enabling technicians to quickly identify and address issues. For Mercedes-Benz owners, understanding these codes is just as important. It empowers you with the knowledge to make informed decisions about your vehicle’s maintenance and when to seek professional help. Whether it’s a warning light on the dashboard or a more complex engine issue, being familiar with OBD-II codes is a valuable part of Mercedes-Benz ownership.

What are OBD-II Codes? (Understanding OBD-II Codes)

The Basics of OBD-II Codes

On-Board Diagnostic II (OBD-II) codes are the language through which a car’s computer communicates about its health and any issues it may be experiencing. These codes are particularly crucial in the diagnostics of modern vehicles, including Mercedes-Benz cars, known for their advanced automotive technology.

One of the most recognizable features associated with OBD-II codes is the “Check Engine” light on your vehicle’s dashboard. When this light illuminates, it’s an indication that the vehicle’s computer has detected an issue within the engine or emission system. This is where the OBD-II system comes into play. It stores a specific code, or sometimes multiple codes, that corresponds to the particular issue detected.

The Role of the OBD-II Port

Every modern vehicle, including Mercedes-Benz models, is equipped with an OBD-II port. This port is typically located under the dashboard, near the steering column, and serves as a gateway for diagnosing vehicle issues. By connecting an OBD-II scanner to this port, technicians and vehicle owners can retrieve the stored codes. These codes are alphanumeric and usually consist of a letter followed by four numbers (e.g., P0300). Each code points to a specific issue, ranging from something as simple as a loose gas cap to more complex engine problems.

Significance in Mercedes-Benz Cars

For Mercedes-Benz vehicles, OBD-II codes are instrumental in maintaining the vehicle’s sophisticated systems. Mercedes-Benz cars are engineered with precision, and the OBD-II system plays a significant role in ensuring that every aspect of the vehicle functions as intended. When a Mercedes-Benz displays an OBD-II code, it alerts the owner or technician to a potential issue that might need attention. This early detection is key in preventing minor issues from escalating into major repairs, thereby maintaining the car’s performance and extending its lifespan.

Understanding OBD-II Codes

• First Character: The first character in an OBD-II code is always a letter. It represents the system or area of the vehicle where the problem is detected. Common first characters include:

P: Powertrain (Engine and Transmission)

C: Chassis (ABS, Traction Control)

B: Body (Airbags, Climate Control)

U: Network Communication (CAN Bus, LAN)

• Next Two Characters: Following the first character, there are two numeric characters. These digits provide more specific information about the issue within the system indicated by the first character. For example, a P0300 code refers to a random misfire in the engine.

• Hyphen or Space: After the first three characters, there is usually a hyphen or space to separate them from the next character.

• Fourth Character: The fourth character is a numeric digit, and it provides additional information about the problem. It often indicates the severity or location of the issue. For example, a P0301 code might indicate a misfire in cylinder 1.

• Remaining Characters (Optional): Some OBD-II codes may have additional characters following the fourth character. These characters can provide even more specific information about the problem, such as the exact component or sensor involved.

Now, let’s explain the difference between generic codes and manufacturer-specific codes:

• Generic Codes: Generic OBD-II codes are standardized across all vehicle manufacturers and are defined by the Society of Automotive Engineers (SAE). These codes provide general information about a problem’s location and nature but may not offer precise details. They are typically in the format P0xxx, where “P” stands for Powertrain, and the next two digits provide more information.

• Manufacturer-Specific Codes: Mercedes-Benz vehicles have their own set of manufacturer-specific codes. These codes typically start with “P1” followed by two digits. For example, a P1400 code on a Mercedes vehicle would be a manufacturer-specific code. Manufacturer-specific codes, also known as enhanced or enhanced manufacturer-specific codes, offer more specific and detailed information about issues and often include additional codes beyond the generic ones. 

Common Mercedes-Benz OBD-II Codes and Their Meanings

P0100 – Mass Air Flow (MAF) Circuit Malfunction

• Description: This code indicates a problem with the Mass Air Flow sensor or circuit.
• Possible Causes: Dirty or faulty MAF sensor, air leaks, damaged wiring.
• Solutions: Clean or replace the MAF sensor. Check for air leaks and repair any damaged wiring.
• Adsitco Products: MAF sensors, air filters.

P0130 – O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)

• Description: Fault in the oxygen sensor located in bank 1, sensor 1.
• Possible Causes: Faulty sensor, wiring issues, exhaust leaks.
• Solutions: Replace the oxygen sensor, repair wiring, or fix exhaust leaks.
• Adsitco Products: Oxygen sensors, exhaust components.

P0171 – System Too Lean (Bank 1)

• Description: The fuel mixture in bank 1 is too lean (too much air, not enough fuel).
• Possible Causes: Vacuum leaks, fuel injection issues, air intake problems.
• Solutions: Check for and repair vacuum leaks, inspect fuel injectors, and clean air intake system.
• Adsitco Products: Vacuum hoses, fuel injectors, air intake components.

P0300 – Random/Multiple Cylinder Misfire Detected

• Description: Multiple engine cylinders are misfiring, affecting performance.
• Possible Causes: Faulty spark plugs, ignition coils, distributor issues.
• Solutions: Replace spark plugs, ignition coils, or repair distributor.
• Adsitco Products: Spark plugs, ignition coils, distributor components.

P0410 – Secondary Air Injection System Malfunction

• Description: Problem with the emissions control air injection system.
• Possible Causes: Faulty air pump, blocked hoses, faulty valves.
• Solutions: Replace air pump, clear blockages in hoses, replace valves.
• Adsitco Products: Air pumps, air injection hoses, valves.

P0500 – Vehicle Speed Sensor Malfunction

• Description: The vehicle’s speed sensor is reporting incorrect data.
• Possible Causes: Faulty speed sensor, wiring issues, malfunctioning dashboard.
• Solutions: Replace speed sensor, repair wiring, check dashboard functionality.
• Adsitco Products: Speed sensors, wiring harnesses.

P0560 – System Voltage Malfunction

• Description: Issue detected with the car’s electrical system voltage.
• Possible Causes: Weak battery, faulty alternator, bad connections.
• Solutions: Test and replace battery, repair or replace alternator, check electrical connections.
• Adsitco Products: Batteries, alternators, electrical components.

P0700 – Transmission Control System Malfunction

• Description: General fault in the transmission control system.
• Possible Causes: Transmission sensor failures, fluid problems, ECM issues.
• Solutions: Check transmission fluid, replace sensors, inspect ECM.
• Adsitco Products: Transmission sensors, transmission fluid, ECM components.

P0720 – Output Speed Sensor Circuit Malfunction

• Description: Fault in the transmission’s output speed sensor.
• Possible Causes: Defective speed sensor, wiring problems.
• Solutions: Replace output speed sensor, check and repair wiring.
• Adsitco Products: Speed sensors, transmission parts.

P0730 – Incorrect Gear Ratio

• Description: Incorrect gear ratio detection in the transmission.
• Possible Causes: Transmission slipping, hydraulic problems, sensor issues.
• Solutions: Check for transmission slippage, repair hydraulic circuits, replace sensors.
• Adsitco Products: Transmission rebuild kits, hydraulic components, sensors.

P2006 – Intake Manifold Runner Control Stuck Closed Bank 1

• Description: The intake manifold runner control in bank 1 is stuck closed.
• Possible Causes: Faulty control valve, vacuum leak, mechanical failure.
• Solutions: Replace control valve, repair vacuum leaks, inspect manifold.
• Adsitco Products: Intake manifold components, control valves.

P2187 – System Too Lean at Idle (Bank 1)

• Description: Fuel mixture in bank 1 is too lean during idle.
• Possible Causes: Vacuum leaks, faulty fuel injectors, air metering issues.
• Solutions: Repair vacuum leaks, replace fuel injectors, check air flow sensors.
• Adsitco Products: Fuel injectors, vacuum components, air flow sensors.

Full List of Mercedes-Benz OBD-II Codes Broken Out

P0400 Mercedes Fault Codes

P0466 – Purge Flow Sensor Circuit Range/Performance

• Description: The purge flow sensor circuit is exhibiting performance issues or is out of the expected range.
• Possible Causes: Faulty purge flow sensor, clogged purge lines, electrical connection issues.
• Solutions: Replace the purge flow sensor, clear purge lines, check electrical connections.
• Adsitco Products: Purge flow sensors, emission system components.

P0467 – Purge Flow Sensor Circuit Low Input

• Description: The purge flow sensor circuit has a low input, indicating a potential short.
• Possible Causes: Short circuit in the purge flow sensor, poor electrical connection.
• Solutions: Inspect wiring for shorts, secure electrical connections.
• Adsitco Products: Wiring harnesses, electrical connectors.

P0468 – Purge Flow Sensor Circuit High Input

• Description: The purge flow sensor circuit has a high input, which could be due to an open circuit.
• Possible Causes: Open circuit in the purge flow sensor, poor electrical connection.
• Solutions: Check for open circuits, ensure good electrical connections.
• Adsitco Products: Electrical repair kits, purge flow sensors.

P0469 – Purge Flow Sensor Circuit Intermittent

• Description: Intermittent signal from the purge flow sensor circuit.
• Possible Causes: Loose connections, intermittent short or open circuits.
• Solutions: Tighten all connections, inspect wiring for intermittent faults.
• Adsitco Products: Electrical testing tools, wiring components.

P0470 – Exhaust Pressure Sensor Malfunction

• Description: Fault detected in the exhaust pressure sensor circuit.
• Possible Causes: Faulty exhaust pressure sensor, exhaust leaks, wiring issues.
• Solutions: Replace the exhaust pressure sensor, repair exhaust leaks, check wiring.
• Adsitco Products: Exhaust pressure sensors, exhaust system components.

P0471 – Exhaust Pressure Sensor Range/Performance

• Description: The exhaust pressure sensor is showing performance outside the expected range.
• Possible Causes: Faulty sensor, clogged exhaust, wiring problems.
• Solutions: Replace the sensor, unclog the exhaust system, repair wiring.
• Adsitco Products: Exhaust sensors, exhaust repair kits.

P0472 – Exhaust Pressure Sensor Low

• Description: Low signal from the exhaust pressure sensor.
• Possible Causes: Short circuit in sensor wiring, faulty sensor.
• Solutions: Check wiring for shorts, replace the exhaust pressure sensor.
• Adsitco Products: Wiring repair components, exhaust pressure sensors.

P0473 – Exhaust Pressure Sensor High

• Description: High signal from the exhaust pressure sensor.
• Possible Causes: Open circuit in sensor wiring, faulty sensor.
• Solutions: Check for open circuits, replace the sensor.
• Adsitco Products: Exhaust pressure sensors, wiring kits.

P0474 – Exhaust Pressure Sensor Intermittent

• Description: Intermittent readings from the exhaust pressure sensor.
• Possible Causes: Loose connections, intermittent wiring faults.
• Solutions: Secure connections, inspect wiring for intermittent faults.
• Adsitco Products: Wiring components, exhaust pressure sensors.

P0475 – Exhaust Pressure Control Valve Malfunction

• Description: Malfunction in the exhaust pressure control valve.
• Possible Causes: Faulty control valve, clogged exhaust system, wiring issues.
• Solutions: Replace control valve, clear exhaust system, repair wiring.
• Adsitco Products: Exhaust control valves, exhaust system components.

P0476 – Exhaust Pressure Control Valve Range/Performance

• Description: Exhaust pressure control valve performance is outside the expected range.
• Possible Causes: Sticking or faulty valve, clogged exhaust, sensor issues.
• Solutions: Replace or clean valve, unclog exhaust, check sensors.
• Adsitco Products: Exhaust valves, sensors, exhaust maintenance kits.

P0477 – Exhaust Pressure Control Valve Low

• Description: Low signal from the exhaust pressure control valve.
• Possible Causes: Short circuit in valve circuit, faulty valve.
• Solutions: Inspect wiring for shorts, replace the valve.
• Adsitco Products: Exhaust pressure control valves, wiring repair components.

P0478 – Exhaust Pressure Control Valve High

• Description: High signal from the exhaust pressure control valve.
• Possible Causes: Open circuit in valve circuit, faulty valve.
• Solutions: Check for open circuits, replace the valve.
• Adsitco Products: Exhaust pressure control valves, electrical repair kits.

P0479 – Exhaust Pressure Control Valve Intermittent

• Description: Intermittent signal from the exhaust pressure control valve.
• Possible Causes: Loose connections, intermittent faults in wiring.
• Solutions: Tighten connections, inspect wiring.
• Adsitco Products: Electrical connectors, exhaust pressure control valves.

P0480 – Cooling Fan 1 Control Circuit Malfunction

• Description: Problem detected in the control circuit of cooling fan 1.
• Possible Causes: Faulty fan control relay, wiring issues, faulty fan motor.
• Solutions: Replace fan control relay, repair wiring, replace fan motor.
• Adsitco Products: Cooling fan components, relays, wiring harnesses.

P0481 – Cooling Fan 2 Control Circuit Malfunction

• Description: Issue in the control circuit of cooling fan 2.
• Possible Causes: Defective fan control relay, wiring problems, faulty fan.
• Solutions: Replace the relay, check and repair wiring, replace the fan.
• Adsitco Products: Cooling system components, electrical repair parts.

P0482 – Cooling Fan 3 Control Circuit Malfunction

• Description: Fault in the control circuit of cooling fan 3.
• Possible Causes: Malfunctioning fan relay, wiring faults, defective fan.
• Solutions: Replace the relay, repair wiring, replace the fan.
• Adsitco Products: Cooling fans, fan relays, wiring kits.

P0483 – Cooling Fan Rationality Check Malfunction

• Description: The cooling fan is not operating as expected.
• Possible Causes: Faulty fan motor, control module issues, sensor faults.
• Solutions: Replace the fan motor, inspect control module, replace sensors.
• Adsitco Products: Cooling fans, control modules, sensors.

P0484 – Cooling Fan Circuit Over Current

• Description: The cooling fan circuit is drawing an unusually high current, indicating a potential overload or short circuit.
• Possible Causes: Short circuit in the fan motor, wiring issues, control module faults, overloaded fan motor.
• Solutions: Inspect and repair wiring, replace the fan motor if necessary, check and repair control module.
• Adsitco Products: Cooling fans, wiring harnesses, control modules.

P0485 – Cooling Fan Power/Ground Circuit Malfunction

• Description: There is a malfunction in the power or ground circuit of the cooling fan, indicating a possible electrical connection issue.
• Possible Causes: Faulty electrical connections, damaged wiring, malfunctioning control module, ground circuit issues.
• Solutions: Check and repair electrical connections, inspect and repair wiring, replace or repair control module as needed.
• Adsitco Products: Cooling fans, electrical connectors, wiring harnesses, control modules.

P0500 Mercedes Fault Codes

P0500 – Vehicle Speed Sensor “A” Malfunction

• Description: This code indicates that there is an issue with the vehicle speed sensor, which affects the functioning of the speedometer and may impact transmission shifting.
• Possible Causes: Faulty vehicle speed sensor, damaged wiring or connections to the sensor, malfunctioning speedometer, issues with the ECU.
• Solutions: Replace the vehicle speed sensor, inspect and repair wiring and connections, check the speedometer and ECU for faults.
• Adsitco Products: Vehicle speed sensors, wiring harnesses, speedometers, ECUs.

P0501 – Vehicle Speed Sensor “A” Range/Performance

• Description: This code is set when the vehicle speed sensor “A” is providing a signal that is out of the expected range or behaving erratically.
• Possible Causes: Malfunctioning vehicle speed sensor, intermittent wiring issues, faulty speedometer, ECU problems.
• Solutions: Replace or recalibrate the vehicle speed sensor, check and repair wiring, inspect speedometer and ECU.
• Adsitco Products: Vehicle speed sensors, wiring harnesses, speedometers, ECUs.

P0502 – Vehicle Speed Sensor “A” Circuit Low Input

• Description: The vehicle speed sensor “A” is reporting a lower than expected voltage, indicating a potential short or sensor issue.
• Possible Causes: Short circuit in the speed sensor wiring, faulty vehicle speed sensor, issues with the ECU.
• Solutions: Inspect and repair wiring for short circuits, replace the vehicle speed sensor, check the ECU.
• Adsitco Products: Vehicle speed sensors, wiring harnesses, ECUs.

P0503 – Vehicle Speed Sensor “A” Intermittent/Erratic/High

• Description: This code signifies that the vehicle speed sensor “A” is providing intermittent, erratic, or overly high readings.
• Possible Causes: Faulty or intermittent vehicle speed sensor, wiring or connection issues, speedometer or ECU faults.
• Solutions: Replace the vehicle speed sensor, inspect and repair wiring and connections, check the speedometer and ECU.
• Adsitco Products: Vehicle speed sensors, wiring harnesses, speedometers, ECUs.

P0504 – Brake Switch “A”/”B” Correlation

• Description: The code indicates a mismatch between the signals from brake switches A and B, suggesting a possible switch failure or wiring issue.
• Possible Causes: Faulty brake light switch, misaligned or damaged brake light switches, wiring or connector issues.
• Solutions: Adjust or replace brake light switches, inspect and repair wiring and connectors.
• Adsitco Products: Brake light switches, wiring harnesses, connectors.

P0505 – Idle Control System Malfunction

• Description: This code is triggered when there is a malfunction in the idle control system, leading to erratic or incorrect idle speed.
• Possible Causes: Faulty idle air control valve, vacuum leaks, throttle body issues, ECU problems.
• Solutions: Replace or clean the idle air control valve, check for and repair vacuum leaks, inspect the throttle body and ECU.
• Adsitco Products: Idle air control valves, vacuum hoses, throttle bodies, ECUs.

P0506 – Idle Control System RPM Lower Than Expected

• Description: This code indicates that the engine’s idle speed is consistently lower than the expected range, which might cause stalling.
• Possible Causes: Dirty or faulty idle air control valve, vacuum leaks, throttle body or ECU issues.
• Solutions: Clean or replace the idle air control valve, repair vacuum leaks, inspect the throttle body and ECU.
• Adsitco Products: Idle air control valves, vacuum hoses, throttle bodies, ECUs.

P0507 – Idle Control System RPM Higher Than Expected

• Description: This code suggests that the engine’s idle speed is consistently higher than expected, which may affect vehicle handling.
• Possible Causes: Sticking idle air control valve, vacuum leaks, throttle body malfunctions, ECU issues.
• Solutions: Replace or clean the idle air control valve, check for and repair vacuum leaks, inspect the throttle body and ECU.
• Adsitco Products: Idle air control valves, vacuum hoses, throttle bodies, ECUs.

P0510 – Closed Throttle Position Switch Malfunction

• Description: The throttle position switch is not operating as expected when the throttle is closed.
• Possible Causes: Faulty throttle position switch, misaligned or damaged switch, wiring issues.
• Solutions: Replace or adjust the throttle position switch, inspect and repair wiring.
• Adsitco Products: Throttle position switches, wiring harnesses.

P0520 – Engine Oil Pressure Sensor/Switch Circuit Malfunction

• Description: There is a malfunction in the circuit of the engine oil pressure sensor or switch.
• Possible Causes: Faulty oil pressure sensor/switch, wiring or connector issues, engine oil level/quality problems.
• Solutions: Replace the oil pressure sensor/switch, check and repair wiring, ensure correct oil level and quality.
• Adsitco Products: Oil pressure sensors/switches, wiring harnesses.

P0521 – Engine Oil Pressure Sensor/Switch Circuit Range/Performance

• Description: The engine oil pressure sensor/switch circuit is providing a reading outside the expected range or is performing poorly.
• Possible Causes: Malfunctioning oil pressure sensor, wiring or connection issues, incorrect engine oil viscosity.
• Solutions: Replace or recalibrate the oil pressure sensor, inspect wiring, use correct oil viscosity.
• Adsitco Products: Oil pressure sensors, wiring harnesses.

P0522 – Engine Oil Pressure Sensor/Switch Circuit Low Voltage

• Description: The engine oil pressure sensor/switch circuit is reporting lower than expected voltage.
• Possible Causes: Short circuit in oil pressure sensor wiring, faulty sensor, low engine oil level.
• Solutions: Inspect and repair wiring, replace the oil pressure sensor, check and refill engine oil.
• Adsitco Products: Oil pressure sensors, wiring harnesses.

P0523 – Engine Oil Pressure Sensor/Switch Circuit High Voltage

• Description: The engine oil pressure sensor/switch circuit is reporting higher than expected voltage.
• Possible Causes: Open circuit or poor electrical connection in sensor wiring, faulty sensor.
• Solutions: Inspect and repair wiring, replace the oil pressure sensor.
• Adsitco Products: Oil pressure sensors, wiring harnesses.

P0530 – A/C Refrigerant Pressure Sensor Circuit Malfunction

• Description: There is a malfunction in the air conditioning refrigerant pressure sensor circuit.
• Possible Causes: Faulty A/C refrigerant pressure sensor, wiring or connector issues, refrigerant level problems.
• Solutions: Replace the A/C refrigerant pressure sensor, check and repair wiring, ensure correct refrigerant level.
• Adsitco Products: A/C refrigerant pressure sensors, wiring harnesses.

P0531 – A/C Refrigerant Pressure Sensor Circuit Range/Performance

• Description: The A/C refrigerant pressure sensor circuit is providing a reading outside the expected range or is performing poorly.
• Possible Causes: Malfunctioning A/C refrigerant pressure sensor, wiring or connection issues, incorrect refrigerant charge.
• Solutions: Replace or recalibrate the A/C refrigerant pressure sensor, inspect wiring, correct refrigerant charge.
• Adsitco Products: A/C refrigerant pressure sensors, wiring harnesses.

P0532 – A/C Refrigerant Pressure Sensor Circuit Low Input

• Description: The A/C refrigerant pressure sensor circuit is reporting lower than expected input.
• Possible Causes: Low refrigerant level, short circuit in sensor wiring, faulty sensor.
• Solutions: Refill refrigerant, inspect and repair wiring, replace the A/C refrigerant pressure sensor.
• Adsitco Products: A/C refrigerant pressure sensors, wiring harnesses, refrigerants.

P0533 – A/C Refrigerant Pressure Sensor Circuit High Input

• Description: The A/C refrigerant pressure sensor circuit is reporting higher than expected input.
• Possible Causes: Overcharged refrigerant system, open circuit or poor electrical connection in sensor wiring, faulty sensor.
• Solutions: Adjust refrigerant charge, inspect and repair wiring, replace the A/C refrigerant pressure sensor.
• Adsitco Products: A/C refrigerant pressure sensors, wiring harnesses, refrigerants.

P0534 – Air Conditioner Refrigerant Charge Loss

• Description: There is a detected loss of refrigerant charge in the air conditioning system.
• Possible Causes: Refrigerant leaks, faulty A/C compressor, damaged A/C system components.
• Solutions: Check for and repair refrigerant leaks, replace faulty components like A/C compressor.
• Adsitco Products: A/C refrigerants, A/C compressors, A/C system components.

P0550 – Power Steering Pressure Sensor Circuit Malfunction

• Description: The circuit of the power steering pressure sensor is malfunctioning.
• Possible Causes: Faulty power steering pressure sensor, wiring or connector issues, power steering fluid level or quality problems.
• Solutions: Replace the power steering pressure sensor, check and repair wiring, ensure correct power steering fluid level and quality.
• Adsitco Products: Power steering pressure sensors, wiring harnesses, power steering fluid.

P0551 – Power Steering Pressure Sensor Circuit Range/Performance

• Description: The power steering pressure sensor circuit is providing a reading outside the expected range or is performing poorly.
• Possible Causes: Malfunctioning power steering pressure sensor, wiring or connection issues, power steering pump faults.
• Solutions: Replace or recalibrate the power steering pressure sensor, inspect wiring, check the power steering pump.
• Adsitco Products: Power steering pressure sensors, wiring harnesses, power steering pumps.

P0552 – Power Steering Pressure Sensor Circuit Low Input

• Description: The power steering pressure sensor circuit is reporting lower than expected input.
• Possible Causes: Low power steering fluid level, short circuit in sensor wiring, faulty sensor.
• Solutions: Refill power steering fluid, inspect and repair wiring, replace the power steering pressure sensor.
• Adsitco Products: Power steering pressure sensors, wiring harnesses, power steering fluid.

P0553 – Power Steering Pressure Sensor Circuit High Input

• Description: The power steering pressure sensor circuit is reporting higher than expected input.
• Possible Causes: Faulty power steering pressure sensor, open circuit or poor electrical connection in sensor wiring.
• Solutions: Replace the power steering pressure sensor, inspect and repair wiring.
• Adsitco Products: Power steering pressure sensors, wiring harnesses.

P0554 – Power Steering Pressure Sensor Circuit Intermittent

• Description: The power steering pressure sensor circuit is experiencing intermittent readings or connectivity.
• Possible Causes: Intermittent wiring or connection issues, failing power steering pressure sensor.
• Solutions: Inspect and repair wiring and connections, replace the power steering pressure sensor if necessary.
• Adsitco Products: Power steering pressure sensors, wiring harnesses.

P0560 – System Voltage Malfunction

• Description: There is a malfunction in the vehicle’s electrical system voltage.
• Possible Causes: Faulty battery, alternator issues, wiring problems.
• Solutions: Check and replace the battery if necessary, inspect and repair the alternator, check wiring.
• Adsitco Products: Batteries, alternators, wiring harnesses.

P0561 – System Voltage Unstable

• Description: The vehicle’s electrical system voltage is unstable.
• Possible Causes: Alternator malfunctioning, poor battery condition, electrical system issues.
• Solutions: Test and replace the alternator, inspect the battery, check for electrical system faults.
• Adsitco Products: Alternators, batteries, electrical system components.

P0562 – System Voltage Low

• Description: The system voltage is lower than expected, indicating a potential charging or electrical issue.
• Possible Causes: Weak or failing battery, alternator not charging properly, electrical connections issues.
• Solutions: Test and replace the battery, check alternator function, inspect electrical connections.
• Adsitco Products: Batteries, alternators, electrical connectors.

P0563 – System Voltage High

• Description: The system voltage is higher than expected, which could indicate an overcharging issue.
• Possible Causes: Faulty voltage regulator, alternator issues, electrical system malfunctions.
• Solutions: Replace or repair the voltage regulator, inspect the alternator, check the electrical system.
• Adsitco Products: Voltage regulators, alternators, electrical system components.

P0565 – Cruise Control On Signal Malfunction

• Description: There is a malfunction in the “Cruise Control On” signal, affecting the cruise control system’s operation.
• Possible Causes: Faulty cruise control switch, wiring issues, cruise control module faults.
• Solutions: Replace the cruise control switch, inspect and repair wiring, check the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0566 – Cruise Control Off Signal Malfunction

• Description: There is a malfunction in the “Cruise Control Off” signal, impacting the cruise control system’s ability to disengage.
• Possible Causes: Faulty cruise control switch, wiring problems, cruise control module defects.
• Solutions: Replace the cruise control switch, check and repair wiring, inspect the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0567 – Cruise Control Resume Signal Malfunction

• Description: The “Cruise Control Resume” signal is malfunctioning, affecting the cruise control’s resume function.
• Possible Causes: Malfunctioning cruise control switch, wiring issues, faults in the cruise control module.
• Solutions: Replace the cruise control switch, inspect and repair wiring, check the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0568 – Cruise Control Set Signal Malfunction

• Description: There is a malfunction in the “Cruise Control Set” signal, impacting the ability to set the cruise control.
• Possible Causes: Defective cruise control switch, wiring problems, issues with the cruise control module.
• Solutions: Replace the cruise control switch, check and repair wiring, inspect the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0569 – Cruise Control Coast Signal Malfunction

• Description: The “Cruise Control Coast” signal is malfunctioning, affecting the cruise control’s coast function.
• Possible Causes: Faulty cruise control switch, wiring issues, cruise control module problems.
• Solutions: Replace the cruise control switch, inspect and repair wiring, check the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0570 – Cruise Control Accel Signal Malfunction

• Description: There is a malfunction in the “Cruise Control Accel” signal, impacting the cruise control’s acceleration function.
• Possible Causes: Malfunctioning cruise control switch, wiring problems, faults in the cruise control module.
• Solutions: Replace the cruise control switch, check and repair wiring, inspect the cruise control module.
• Adsitco Products: Cruise control switches, wiring harnesses, cruise control modules.

P0571 – Cruise Control/Brake Switch A Circuit Malfunction

• Description: There is a malfunction in the circuit of the Cruise Control/Brake Switch A, impacting the interaction between cruise control and braking systems.
• Possible Causes: Faulty brake switch, wiring or connector issues, cruise control system faults.
• Solutions: Replace the brake switch, inspect and repair wiring, check the cruise control system.
• Adsitco Products: Brake switches, wiring harnesses, cruise control systems.

P0572 – Cruise Control/Brake Switch A Circuit Low

• Description: The Cruise Control/Brake Switch A circuit is reporting lower than expected voltage, indicating a potential issue.
• Possible Causes: Short circuit in brake switch wiring, faulty brake switch.
• Solutions: Inspect and repair wiring, replace the brake switch.
• Adsitco Products: Brake switches, wiring harnesses.

P0573 – Cruise Control/Brake Switch A Circuit High

• Description: The Cruise Control/Brake Switch A circuit is reporting higher than expected voltage, indicating a potential electrical issue.
• Possible Causes: Open circuit or poor electrical connection in brake switch wiring, faulty brake switch.
• Solutions: Inspect and repair wiring, replace the brake switch.
• Adsitco Products: Brake switches, wiring harnesses.

P0574 to P0580 (P0575, P0576, P0577, P0578, P0579) – Cruise Control Related Malfunctions

• Description: These codes indicate various malfunctions related to the cruise control system.
• Possible Causes: Varying based on specific code, including faulty cruise control module, wiring issues, sensor faults, switch problems.
• Solutions: Depending on the specific code, solutions may include replacing the cruise control module, repairing wiring, replacing sensors or switches.
• Adsitco Products: Cruise control modules, wiring harnesses, sensors, switches.

P0600 Mercedes Fault Codes

P0600 – Serial Communication Link Malfunction

• Description: The Serial Communication Link is experiencing a malfunction, indicating potential issues with communication between control modules.
• Possible Causes: Faulty wiring, poor electrical connections, issues with control module communication.
• Solutions: Inspect and repair wiring, ensure proper electrical connections, diagnose and address control module communication problems.
• Adsitco Products: Wiring harnesses, control modules.

P0601 – Internal Control Module Memory Check Sum Error

• Description: An error in the internal control module’s memory check sum has been detected, indicating a potential memory-related issue.
• Possible Causes: Faulty control module memory, programming errors.
• Solutions: Evaluate and potentially replace the control module, reprogram as necessary.
• Adsitco Products: Control modules.

P0602 – Control Module Programming Error

• Description: The control module is reporting a programming error, indicating potential issues with its programming.
• Possible Causes: Incorrect programming, issues with software.
• Solutions: Reprogram the control module with correct software, ensure proper programming procedures are followed.
• Adsitco Products: Control modules, programming tools.

P0603 – Internal Control Module Keep Alive Memory (KAM) Error

• Description: An error in the internal control module’s Keep Alive Memory (KAM) has been detected, indicating potential memory retention problems.
• Possible Causes: Faulty control module KAM, wiring issues.
• Solutions: Evaluate and potentially replace the control module, inspect and repair wiring.
• Adsitco Products: Control modules, wiring harnesses.

P0604 – Internal Control Module Random Access Memory (RAM) Error

• Description: The internal control module is reporting a Random Access Memory (RAM) error, indicating potential issues with memory storage.
• Possible Causes: Faulty control module RAM, wiring issues.
• Solutions: Evaluate and potentially replace the control module, inspect and repair wiring.
• Adsitco Products: Control modules, wiring harnesses.

P0605 – Internal Control Module Read Only Memory (ROM) Error

• Description: The internal control module is reporting a Read Only Memory (ROM) error, indicating potential issues with memory storage.
• Possible Causes: Faulty control module ROM, wiring issues.
• Solutions: Evaluate and potentially replace the control module, inspect and repair wiring.
• Adsitco Products: Control modules, wiring harnesses.

P0606 – PCM Processor Fault

• Description: The Powertrain Control Module (PCM) is reporting a processor fault, indicating potential issues with the PCM.
• Possible Causes: Faulty PCM, wiring issues.
• Solutions: Evaluate and potentially replace the PCM, inspect and repair wiring.
• Adsitco Products: PCM, wiring harnesses.

P0608 – Control Module VSS Output “A” Malfunction

• Description: The control module is reporting a Vehicle Speed Sensor (VSS) Output “A” malfunction, indicating potential issues with the VSS output.
• Possible Causes: Faulty VSS, wiring issues.
• Solutions: Evaluate and potentially replace the VSS, inspect and repair wiring.
• Adsitco Products: Vehicle Speed Sensors, wiring harnesses.

P0609 – Control Module VSS Output “B” Malfunction

• Description: The control module is reporting a Vehicle Speed Sensor (VSS) Output “B” malfunction, indicating potential issues with the VSS output.
• Possible Causes: Faulty VSS, wiring issues.
• Solutions: Evaluate and potentially replace the VSS, inspect and repair wiring.
• Adsitco Products: Vehicle Speed Sensors, wiring harnesses.

P0620 – Generator Control Circuit Malfunction

• Description: The generator control circuit is experiencing a malfunction, indicating potential issues with the generator.
• Possible Causes: Faulty generator, wiring issues.
• Solutions: Evaluate and potentially replace the generator, inspect and repair wiring.
• Adsitco Products: Generators, wiring harnesses.

P0621 – Generator Lamp “L” Control Circuit Malfunction

• Description: The generator lamp “L” control circuit is reporting a malfunction, indicating potential issues with the generator lamp control.
• Possible Causes: Faulty generator lamp, wiring issues.
• Solutions: Evaluate and potentially replace the generator lamp, inspect and repair wiring.
• Adsitco Products: Generator lamps, wiring harnesses.

P0622 – Generator Field “F” Control Circuit Malfunction

• Description: The generator field “F” control circuit is reporting a malfunction, indicating potential issues with the generator field control.
• Possible Causes: Faulty generator field control, wiring issues.
• Solutions: Evaluate and potentially replace the generator field control, inspect and repair wiring.
• Adsitco Products: Generator field controls, wiring harnesses.

P0650 – Malfunction Indicator Lamp (MIL) Control Circuit Malfunction

• Description: The Malfunction Indicator Lamp (MIL) control circuit is reporting a malfunction, indicating potential issues with the MIL control.
• Possible Causes: Faulty MIL, wiring issues.
• Solutions: Evaluate and potentially replace the MIL, inspect and repair wiring.
• Adsitco Products: Malfunction Indicator Lamps, wiring harnesses.

P0654 – Engine RPM Output Circuit Malfunction

• Description: The engine RPM output circuit is reporting a malfunction, indicating potential issues with the engine RPM signal.
• Possible Causes: Faulty RPM sensor, wiring issues.
• Solutions: Evaluate and potentially replace the RPM sensor, inspect and repair wiring.
• Adsitco Products: RPM sensors, wiring harnesses.

P0655 – Engine Hot Lamp Output Control Circuit Malfunction

• Description: The Engine Hot Lamp output control circuit is reporting a malfunction, indicating potential issues with the engine hot lamp control.
• Possible Causes: Faulty engine hot lamp, wiring issues.
• Solutions: Evaluate and potentially replace the engine hot lamp, inspect and repair wiring.
• Adsitco Products: Engine hot lamps, wiring harnesses.

P0656 – Fuel Level Output Circuit Malfunction

• Description: The fuel level output circuit is reporting a malfunction, indicating potential issues with the fuel level signal.
• Possible Causes: Faulty fuel level sensor, wiring issues.
• Solutions: Evaluate and potentially replace the fuel level sensor, inspect and repair wiring.
• Adsitco Products: Fuel level sensors, wiring harnesses.

P0700 Mercedes Fault Codes

P0700 – Transmission Control System Malfunction

• Description: The Transmission Control System is experiencing a malfunction, indicating potential issues with the overall transmission control.
• Possible Causes: Wiring issues, faulty transmission control module, sensor problems.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the transmission control module, address sensor issues.
• Adsitco Products: Transmission control modules, wiring harnesses, sensors.

P0701 – Transmission Control System Range/Performance

• Description: The Transmission Control System is reporting a range/performance issue, indicating potential inconsistencies in transmission control.
• Possible Causes: Faulty transmission control module, sensor problems.
• Solutions: Evaluate and potentially replace the transmission control module, address sensor issues.
• Adsitco Products: Transmission control modules, sensors.

P0702 – Transmission Control System Electrical

• Description: The Transmission Control System is reporting an electrical issue, indicating potential problems with the electrical components of the transmission control.
• Possible Causes: Wiring issues, faulty transmission control module, sensor problems.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the transmission control module, address sensor issues.
• Adsitco Products: Transmission control modules, wiring harnesses, sensors.

P0703 – Torque Converter/Brake Switch B Circuit Malfunction

• Description: The Torque Converter/Brake Switch B circuit is reporting a malfunction, indicating potential issues with the torque converter or brake switch.
• Possible Causes: Open circuit or poor electrical connection in brake switch wiring, faulty torque converter or brake switch.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the torque converter or brake switch.
• Adsitco Products: Torque converters, brake switches, wiring harnesses.

P0704 – Clutch Switch Input Circuit Malfunction

• Description: The Clutch Switch Input circuit is reporting a malfunction, indicating potential issues with the clutch switch.
• Possible Causes: Open circuit or poor electrical connection in clutch switch wiring, faulty clutch switch.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the clutch switch.
• Adsitco Products: Clutch switches, wiring harnesses.

P0705 – Transmission Range Sensor Circuit malfunction (PRNDL Input)

• Description: The Transmission Range Sensor circuit is reporting a malfunction, indicating potential issues with the PRNDL (Park, Reverse, Neutral, Drive, Low) input.
• Possible Causes: Faulty transmission range sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission range sensor, inspect and repair wiring.
• Adsitco Products: Transmission range sensors, wiring harnesses.

P0706 – Transmission Range Sensor Circuit Range/Performance

• Description: The Transmission Range Sensor circuit is reporting a range/performance issue, indicating potential inconsistencies in the PRNDL (Park, Reverse, Neutral, Drive, Low) input.
• Possible Causes: Faulty transmission range sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission range sensor, inspect and repair wiring.
• Adsitco Products: Transmission range sensors, wiring harnesses.

P0707 – Transmission Range Sensor Circuit Low Input

• Description: The Transmission Range Sensor circuit is reporting a low input, indicating potential issues with the PRNDL (Park, Reverse, Neutral, Drive, Low) input.
• Possible Causes: Faulty transmission range sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission range sensor, inspect and repair wiring.
• Adsitco Products: Transmission range sensors, wiring harnesses.

P0708 – Transmission Range Sensor Circuit High Input

• Description: The Transmission Range Sensor circuit is reporting a high input, indicating potential issues with the PRNDL (Park, Reverse, Neutral, Drive, Low) input.
• Possible Causes: Faulty transmission range sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission range sensor, inspect and repair wiring.
• Adsitco Products: Transmission range sensors, wiring harnesses.

P0709 – Transmission Range Sensor Circuit Intermittent

• Description: The Transmission Range Sensor circuit is reporting an intermittent issue, indicating potential sporadic problems with the PRNDL (Park, Reverse, Neutral, Drive, Low) input.
• Possible Causes: Faulty transmission range sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission range sensor, inspect and repair wiring.
• Adsitco Products: Transmission range sensors, wiring harnesses.

P0710 – Transmission Fluid Temperature Sensor Circuit Malfunction

• Description: The Transmission Fluid Temperature Sensor circuit is reporting a malfunction, indicating potential issues with the transmission fluid temperature measurement.
• Possible Causes: Faulty transmission fluid temperature sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission fluid temperature sensor, inspect and repair wiring.
• Adsitco Products: Transmission fluid temperature sensors, wiring harnesses.

P0711 – Transmission Fluid Temperature Sensor Circuit Range/Performance

• Description: The Transmission Fluid Temperature Sensor circuit is reporting a range/performance issue, indicating potential inconsistencies in transmission fluid temperature measurement.
• Possible Causes: Faulty transmission fluid temperature sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission fluid temperature sensor, inspect and repair wiring.
• Adsitco Products: Transmission fluid temperature sensors, wiring harnesses.

P0712 – Transmission Fluid Temperature Sensor Circuit Low Input

• Description: The Transmission Fluid Temperature Sensor circuit is reporting a low input, indicating potential issues with the transmission fluid temperature measurement.
• Possible Causes: Faulty transmission fluid temperature sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission fluid temperature sensor, inspect and repair wiring.
• Adsitco Products: Transmission fluid temperature sensors, wiring harnesses.

P0713 – Transmission Fluid Temperature Sensor Circuit High Input

• Description: The Transmission Fluid Temperature Sensor circuit is reporting a high input, indicating potential issues with the transmission fluid temperature measurement.
• Possible Causes: Faulty transmission fluid temperature sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission fluid temperature sensor, inspect and repair wiring.
• Adsitco Products: Transmission fluid temperature sensors, wiring harnesses.

P0714 – Transmission Fluid Temperature Sensor Circuit Intermittent

• Description: The Transmission Fluid Temperature Sensor circuit is reporting an intermittent issue, indicating potential sporadic problems with the transmission fluid temperature measurement.
• Possible Causes: Faulty transmission fluid temperature sensor, wiring issues.
• Solutions: Evaluate and potentially replace the transmission fluid temperature sensor, inspect and repair wiring.
• Adsitco Products: Transmission fluid temperature sensors, wiring harnesses.

P0715 – Input/Turbine Speed Sensor Circuit Malfunction

• Description: The Input/Turbine Speed Sensor circuit is reporting a malfunction, indicating potential issues with the input/turbine speed signal.
• Possible Causes: Faulty input/turbine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the input/turbine speed sensor, inspect and repair wiring.
• Adsitco Products: Input/turbine speed sensors, wiring harnesses.

P0716 – Input/Turbine Speed Sensor Circuit Range/Performance

• Description: The Input/Turbine Speed Sensor circuit is reporting a range/performance issue, indicating potential inconsistencies in the input/turbine speed signal.
• Possible Causes: Faulty input/turbine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the input/turbine speed sensor, inspect and repair wiring.
• Adsitco Products: Input/turbine speed sensors, wiring harnesses.

P0717 – Input/Turbine Speed Sensor Circuit No Signal

• Description: The Input/Turbine Speed Sensor circuit is reporting no signal, indicating potential complete absence of the input/turbine speed signal.
• Possible Causes: Faulty input/turbine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the input/turbine speed sensor, inspect and repair wiring.
• Adsitco Products: Input/turbine speed sensors, wiring harnesses.

P0718 – Input/Turbine Speed Sensor Circuit Intermittent

• Description: The Input/Turbine Speed Sensor circuit is reporting an intermittent issue, indicating potential sporadic problems with the input/turbine speed signal.
• Possible Causes: Faulty input/turbine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the input/turbine speed sensor, inspect and repair wiring.
• Adsitco Products: Input/turbine speed sensors, wiring harnesses.

P0719 – Torque Converter/Brake Switch B Circuit Low

• Description: The Torque Converter/Brake Switch B circuit is reporting a low input, indicating potential issues with the torque converter or brake switch.
• Possible Causes: Open circuit or poor electrical connection in brake switch wiring, faulty torque converter or brake switch.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the torque converter or brake switch.
• Adsitco Products: Torque converters, brake switches, wiring harnesses.

P0720 – Output Speed Sensor Circuit Malfunction

• Description: The Output Speed Sensor circuit is reporting a malfunction, indicating potential issues with the output speed signal.
• Possible Causes: Faulty output speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the output speed sensor, inspect and repair wiring.
• Adsitco Products: Output speed sensors, wiring harnesses.

P0721 – Output Speed Sensor Range/Performance

• Description: The Output Speed Sensor circuit is reporting a range/performance issue, indicating potential inconsistencies in the output speed signal.
• Possible Causes: Faulty output speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the output speed sensor, inspect and repair wiring.
• Adsitco Products: Output speed sensors, wiring harnesses.

P0722 – Output Speed Sensor No Signal

• Description: The Output Speed Sensor circuit is reporting no signal, indicating potential complete absence of the output speed signal.
• Possible Causes: Faulty output speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the output speed sensor, inspect and repair wiring.
• Adsitco Products: Output speed sensors, wiring harnesses.

P0723 – Output Speed Sensor Intermittent

• Description: The Output Speed Sensor circuit is reporting an intermittent issue, indicating potential sporadic problems with the output speed signal.
• Possible Causes: Faulty output speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the output speed sensor, inspect and repair wiring.
• Adsitco Products: Output speed sensors, wiring harnesses.

P0724 – Torque Converter/Brake Switch B Circuit High

• Description: The Torque Converter/Brake Switch B circuit is reporting a high input, indicating potential issues with the torque converter or brake switch.
• Possible Causes: Open circuit or poor electrical connection in brake switch wiring, faulty torque converter or brake switch.
• Solutions: Inspect and repair wiring, evaluate and potentially replace the torque converter or brake switch.
• Adsitco Products: Torque converters, brake switches, wiring harnesses.

P0725 – Engine Speed input Circuit Malfunction

• Description: The Engine Speed Input circuit is reporting a malfunction, indicating potential issues with the engine speed signal.
• Possible Causes: Faulty engine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the engine speed sensor, inspect and repair wiring.
• Adsitco Products: Engine speed sensors, wiring harnesses.

P0726 – Engine Speed Input Circuit Range/Performance

• Description: The Engine Speed Input circuit is reporting a range/performance issue, indicating potential inconsistencies in the engine speed signal.
• Possible Causes: Faulty engine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the engine speed sensor, inspect and repair wiring.
• Adsitco Products: Engine speed sensors, wiring harnesses.

P0727 – Engine Speed Input Circuit No Signal

• Description: The Engine Speed Input circuit is reporting no signal, indicating potential complete absence of the engine speed signal.
• Possible Causes: Faulty engine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the engine speed sensor, inspect and repair wiring.
• Adsitco Products: Engine speed sensors, wiring harnesses.

P0728 – Engine Speed Input Circuit Intermittent

• Description: The Engine Speed Input circuit is reporting an intermittent issue, indicating potential sporadic problems with the engine speed signal.
• Possible Causes: Faulty engine speed sensor, wiring issues.
• Solutions: Evaluate and potentially replace the engine speed sensor, inspect and repair wiring.
• Adsitco Products: Engine speed sensors, wiring harnesses.

P0730 – Incorrect Gear Ratio

• Description: The transmission is reporting an incorrect gear ratio, indicating potential issues with gear engagement.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0731 – Gear 1 Incorrect Ratio

• Description: Gear 1 is reporting an incorrect ratio, indicating potential issues with the engagement of the first gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0732 – Gear 2 Incorrect Ratio

• Description: Gear 2 is reporting an incorrect ratio, indicating potential issues with the engagement of the second gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0733 – Gear 3 Incorrect Ratio

• Description: Gear 3 is reporting an incorrect ratio, indicating potential issues with the engagement of the third gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0734 – Gear 4 Incorrect Ratio

• Description: Gear 4 is reporting an incorrect ratio, indicating potential issues with the engagement of the fourth gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0735 – Gear 5 Incorrect Ratio

• Description: Gear 5 is reporting an incorrect ratio, indicating potential issues with the engagement of the fifth gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0736 – Reverse Incorrect Gear Ratio

• Description: The reverse gear is reporting an incorrect ratio, indicating potential issues with the engagement of the reverse gear.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0740 – Torque Converter Clutch Circuit Malfunction

• Description: The Torque Converter Clutch circuit is reporting a malfunction, indicating potential issues with the torque converter.
• Possible Causes: Faulty torque converter, wiring issues.
• Solutions: Evaluate and potentially replace the torque converter, inspect and repair wiring.
• Adsitco Products: Torque converters, wiring harnesses.

P0741 – Torque Converter Clutch Circuit Performance or Stuck Off

• Description: The Torque Converter Clutch circuit is reporting a performance issue or is stuck off, indicating potential problems with the torque converter.
• Possible Causes: Faulty torque converter, wiring issues.
• Solutions: Evaluate and potentially replace the torque converter, inspect and repair wiring.
• Adsitco Products: Torque converters, wiring harnesses.

P0742 – Torque Converter Clutch Circuit Stuck On

• Description: The Torque Converter Clutch circuit is reporting as stuck on, indicating potential problems with the torque converter.
• Possible Causes: Faulty torque converter, wiring issues.
• Solutions: Evaluate and potentially replace the torque converter, inspect and repair wiring.
• Adsitco Products: Torque converters, wiring harnesses.

P0743 – Torque Converter Clutch Circuit Electrical

• Description: The Torque Converter Clutch circuit is reporting an electrical issue, indicating potential problems with the torque converter.
• Possible Causes: Faulty torque converter, wiring issues.
• Solutions: Evaluate and potentially replace the torque converter, inspect and repair wiring.
• Adsitco Products: Torque converters, wiring harnesses.

P0744 – Torque Converter Clutch Circuit Intermittent

• Description: The Torque Converter Clutch circuit is reporting an intermittent issue, indicating potential sporadic problems with the torque converter.
• Possible Causes: Faulty torque converter, wiring issues.
• Solutions: Evaluate and potentially replace the torque converter, inspect and repair wiring.
• Adsitco Products: Torque converters, wiring harnesses.

P0745 – Pressure Control Solenoid Malfunction

• Description: The Pressure Control Solenoid is reporting a malfunction, indicating potential issues with transmission fluid pressure control.
• Possible Causes: Faulty pressure control solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the pressure control solenoid, inspect and repair wiring.
• Adsitco Products: Pressure control solenoids, wiring harnesses.

P0746 – Pressure Control Solenoid Performance or Stuck Off

• Description: The Pressure Control Solenoid is reporting a performance issue or is stuck off, indicating potential problems with transmission fluid pressure control.
• Possible Causes: Faulty pressure control solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the pressure control solenoid, inspect and repair wiring.
• Adsitco Products: Pressure control solenoids, wiring harnesses.

P0747 – Pressure Control Solenoid Stuck On

• Description: The Pressure Control Solenoid is reporting as stuck on, indicating potential problems with transmission fluid pressure control.
• Possible Causes: Faulty pressure control solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the pressure control solenoid, inspect and repair wiring.
• Adsitco Products: Pressure control solenoids, wiring harnesses.

P0748 – Pressure Control Solenoid Electrical

• Description: The Pressure Control Solenoid is reporting an electrical issue, indicating potential problems with transmission fluid pressure control.
• Possible Causes: Faulty pressure control solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the pressure control solenoid, inspect and repair wiring.
• Adsitco Products: Pressure control solenoids, wiring harnesses.

P0749 – Pressure Control Solenoid Intermittent

• Description: The Pressure Control Solenoid is reporting an intermittent issue, indicating potential sporadic problems with transmission fluid pressure control.
• Possible Causes: Faulty pressure control solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the pressure control solenoid, inspect and repair wiring.
• Adsitco Products: Pressure control solenoids, wiring harnesses.

P0750 – Shift Solenoid A Malfunction

• Description: Shift Solenoid A is reporting a malfunction, indicating potential issues with the engagement of the A shift solenoid.
• Possible Causes: Faulty shift solenoid A, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid A, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0751 – Shift Solenoid A Performance or Stuck Off

• Description: Shift Solenoid A is reporting a performance issue or is stuck off, indicating potential problems with the engagement of the A shift solenoid.
• Possible Causes: Faulty shift solenoid A, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid A, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0752 – Shift Solenoid A Stuck On

• Description: Shift Solenoid A is reporting as stuck on, indicating potential problems with the engagement of the A shift solenoid.
• Possible Causes: Faulty shift solenoid A, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid A, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0753 – Shift Solenoid A Electrical

• Description: Shift Solenoid A is reporting an electrical issue, indicating potential problems with the engagement of the A shift solenoid.
• Possible Causes: Faulty shift solenoid A, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid A, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0754 – Shift Solenoid A Intermittent

• Description: Shift Solenoid A is reporting an intermittent issue, indicating potential sporadic problems with the engagement of the A shift solenoid.
• Possible Causes: Faulty shift solenoid A, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid A, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0755 – Shift Solenoid B Malfunction

• Description: Shift Solenoid B is reporting a malfunction, indicating potential issues with the engagement of the B shift solenoid.
• Possible Causes: Faulty shift solenoid B, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid B, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0756 – Shift Solenoid B Performance or Stuck Off

• Description: Shift Solenoid B is reporting a performance issue or is stuck off, indicating potential problems with the engagement of the B shift solenoid.
• Possible Causes: Faulty shift solenoid B, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid B, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0757 – Shift Solenoid B Stuck On

• Description: Shift Solenoid B is reporting as stuck on, indicating potential problems with the engagement of the B shift solenoid.
• Possible Causes: Faulty shift solenoid B, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid B, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0758 – Shift Solenoid B Electrical

• Description: Shift Solenoid B is reporting an electrical issue, indicating potential problems with the engagement of the B shift solenoid.
• Possible Causes: Faulty shift solenoid B, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid B, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0759 – Shift Solenoid B Intermittent

• Description: Shift Solenoid B is reporting an intermittent issue, indicating potential sporadic problems with the engagement of the B shift solenoid.
• Possible Causes: Faulty shift solenoid B, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid B, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0760 – Shift Solenoid C Malfunction

• Description: Shift Solenoid C is reporting a malfunction, indicating potential issues with the engagement of the C shift solenoid.
• Possible Causes: Faulty shift solenoid C, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid C, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0761 – Shift Solenoid C Performance or Stuck Off

• Description: Shift Solenoid C is reporting a performance issue or is stuck off, indicating potential problems with the engagement of the C shift solenoid.
• Possible Causes: Faulty shift solenoid C, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid C, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0762 – Shift Solenoid C Stuck On

• Description: Shift Solenoid C is reporting as stuck on, indicating potential problems with the engagement of the C shift solenoid.
• Possible Causes: Faulty shift solenoid C, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid C, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0763 – Shift Solenoid C Electrical

• Description: Shift Solenoid C is reporting an electrical issue, indicating potential problems with the engagement of the C shift solenoid.
• Possible Causes: Faulty shift solenoid C, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid C, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0764 – Shift Solenoid C Intermittent

• Description: Shift Solenoid C is reporting an intermittent issue, indicating potential sporadic problems with the engagement of the C shift solenoid.
• Possible Causes: Faulty shift solenoid C, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid C, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0765 – Shift Solenoid D Malfunction

• Description: Shift Solenoid D is reporting a malfunction, indicating potential issues with the engagement of the D shift solenoid.
• Possible Causes: Faulty shift solenoid D, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid D, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0766 – Shift Solenoid D Performance or Stuck Off

• Description: Shift Solenoid D is reporting a performance issue or is stuck off, indicating potential problems with the engagement of the D shift solenoid.
• Possible Causes: Faulty shift solenoid D, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid D, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0767 – Shift Solenoid D Stuck On

• Description: Shift Solenoid D is reporting as stuck on, indicating potential problems with the engagement of the D shift solenoid.
• Possible Causes: Faulty shift solenoid D, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid D, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0768 – Shift Solenoid D Electrical

• Description: Shift Solenoid D is reporting an electrical issue, indicating potential problems with the engagement of the D shift solenoid.
• Possible Causes: Faulty shift solenoid D, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid D, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0769 – Shift Solenoid D Intermittent

• Description: Shift Solenoid D is reporting an intermittent issue, indicating potential sporadic problems with the engagement of the D shift solenoid.
• Possible Causes: Faulty shift solenoid D, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid D, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0770 – Shift Solenoid E Malfunction

• Description: Shift Solenoid E is reporting a malfunction, indicating potential issues with the engagement of the E shift solenoid.
• Possible Causes: Faulty shift solenoid E, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid E, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0771 – Shift Solenoid E Performance or Stuck Off

• Description: Shift Solenoid E is reporting a performance issue or is stuck off, indicating potential problems with the engagement of the E shift solenoid.
• Possible Causes: Faulty shift solenoid E, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid E, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0772 – Shift Solenoid E Stuck On

• Description: Shift Solenoid E is reporting as stuck on, indicating potential problems with the engagement of the E shift solenoid.
• Possible Causes: Faulty shift solenoid E, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid E, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0773 – Shift Solenoid E Electrical

• Description: Shift Solenoid E is reporting an electrical issue, indicating potential problems with the engagement of the E shift solenoid.
• Possible Causes: Faulty shift solenoid E, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid E, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0774 – Shift Solenoid E Intermittent

• Description: Shift Solenoid E is reporting an intermittent issue, indicating potential sporadic problems with the engagement of the E shift solenoid.
• Possible Causes: Faulty shift solenoid E, wiring issues.
• Solutions: Evaluate and potentially replace the shift solenoid E, inspect and repair wiring.
• Adsitco Products: Shift solenoids, wiring harnesses.

P0780 – Shift Malfunction

• Description: The transmission is reporting a general shift malfunction, indicating potential issues with gear engagement.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0781 – 1-2 Shift Malfunction

• Description: The transmission is reporting a malfunction in the 1-2 shift, indicating potential issues with the engagement of the first and second gears.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0782 – 2-3 Shift Malfunction

• Description: The transmission is reporting a malfunction in the 2-3 shift, indicating potential issues with the engagement of the second and third gears.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0783 – 3-4 Shift Malfunction

• Description: The transmission is reporting a malfunction in the 3-4 shift, indicating potential issues with the engagement of the third and fourth gears.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0784 – 4-5 Shift Malfunction

• Description: The transmission is reporting a malfunction in the 4-5 shift, indicating potential issues with the engagement of the fourth and fifth gears.
• Possible Causes: Faulty sensors, issues with transmission components.
• Solutions: Evaluate and potentially replace sensors, inspect and repair transmission components.
• Adsitco Products: Sensors, transmission components.

P0785 – Shift/Timing Solenoid Malfunction

• Description: The Shift/Timing Solenoid is reporting a malfunction, indicating potential issues with the timing of gear engagement.
• Possible Causes: Faulty Shift/Timing Solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the Shift/Timing Solenoid, inspect and repair wiring.
• Adsitco Products: Shift/Timing Solenoids, wiring harnesses.

P0786 – Shift/Timing Solenoid Range/Performance

• Description: The Shift/Timing Solenoid is reporting a range/performance issue, indicating potential inconsistencies in the timing of gear engagement.
• Possible Causes: Faulty Shift/Timing Solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the Shift/Timing Solenoid, inspect and repair wiring.
• Adsitco Products: Shift/Timing Solenoids, wiring harnesses.

P0787 – Shift/Timing Solenoid Low

• Description: The Shift/Timing Solenoid is reporting a low signal, indicating potential issues with the timing of gear engagement.
• Possible Causes: Faulty Shift/Timing Solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the Shift/Timing Solenoid, inspect and repair wiring.
• Adsitco Products: Shift/Timing Solenoids, wiring harnesses.

P0788 – Shift/Timing Solenoid High

• Description: The Shift/Timing Solenoid is reporting a high signal, indicating potential issues with the timing of gear engagement.
• Possible Causes: Faulty Shift/Timing Solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the Shift/Timing Solenoid, inspect and repair wiring.
• Adsitco Products: Shift/Timing Solenoids, wiring harnesses.

P0789 – Shift/Timing Solenoid Intermittent

• Description: The Shift/Timing Solenoid is reporting an intermittent issue, indicating potential sporadic problems with the timing of gear engagement.
• Possible Causes: Faulty Shift/Timing Solenoid, wiring issues.
• Solutions: Evaluate and potentially replace the Shift/Timing Solenoid, inspect and repair wiring.
• Adsitco Products: Shift/Timing Solenoids, wiring harnesses.

P0790 – Normal/Performance Switch Circuit Malfunction

• Description: The Normal/Performance Switch Circuit is reporting a malfunction, indicating potential issues with the switch circuit.
• Possible Causes: Faulty switch, wiring issues.
• Solutions: Evaluate and potentially replace the switch, inspect and repair wiring.
• Adsitco Products: Switches, wiring harnesses.

P0800 Mercedes Fault Codes

P0801 – Reverse Inhibit Control Circuit Malfunction

• Description: The Reverse Inhibit Control Circuit is malfunctioning, indicating a failure in the system that prevents gear engagement in reverse under certain conditions.
• Possible Causes: Faulty control solenoid, wiring issues, or ECM (Engine Control Module) problems.
• Solutions: Inspect and potentially replace the control solenoid, check and repair wiring, or consider ECM diagnostics and repair.
• Adsitco Products: Solenoids, wiring harnesses, ECM components.

P0803 – 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction

• Description: This code indicates a malfunction in the solenoid control circuit responsible for the 1-4 upshift or skip shift function, affecting gear transition efficiency.
• Possible Causes: Faulty skip shift solenoid, damaged wiring, or poor solenoid connection.
• Solutions: Replace the skip shift solenoid if faulty, repair any damaged wiring, and ensure secure connections.
• Adsitco Products: Skip shift solenoids, wiring harnesses.

P0804 – 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction

• Description: Indicates a problem with the circuit controlling the lamp that signals the 1-4 upshift (skip shift) operation, potentially confusing the driver about gear changes.
• Possible Causes: Faulty lamp or control circuit, wiring issues.
• Solutions: Check and replace the lamp if necessary, repair or replace damaged components of the control circuit, and fix any wiring issues.
• Adsitco Products: Indicator lamps, wiring harnesses.

P0805 – Clutch Position Sensor Circuit Malfunction

• Description: The clutch position sensor circuit is reporting a malfunction, affecting the transmission’s ability to gauge the clutch’s position accurately.
• Possible Causes: Faulty clutch position sensor, wiring issues, or a bad connection.
• Solutions: Replace the clutch position sensor if defective, inspect and repair wiring, and ensure connections are secure.
• Adsitco Products: Clutch position sensors, wiring harnesses.

P0806 – Clutch Position Sensor Circuit Range/Performance

• Description: This code indicates that the clutch position sensor circuit is out of the expected range or performing poorly, leading to potential transmission issues.
• Possible Causes: Misadjusted clutch position sensor, faulty sensor, wiring problems.
• Solutions: Adjust the clutch position sensor if necessary, replace the sensor if faulty, and repair any wiring issues.
• Adsitco Products: Clutch position sensors, wiring harnesses.

P0807 – Clutch Position Sensor Circuit Low

• Description: The clutch position sensor circuit is reporting a low input signal, potentially indicating a short or malfunction within the circuit.
• Possible Causes: Short to ground in the sensor circuit, faulty sensor.
• Solutions: Inspect the circuit for shorts, replace the clutch position sensor if needed.
• Adsitco Products: Clutch position sensors, wiring harnesses.

P0808 – Clutch Position Sensor Circuit High

• Description: Indicates a high input signal from the clutch position sensor circuit, suggesting a possible open or malfunction.
• Possible Causes: Open in the sensor circuit, faulty sensor.
• Solutions: Check the circuit for opens, replace the clutch position sensor if necessary.
• Adsitco Products: Clutch position sensors, wiring harnesses.

P0809 – Clutch Position Sensor Circuit Intermittent Ckt

• Description: This code signifies intermittent signals from the clutch position sensor circuit, leading to unpredictable vehicle performance and transmission behavior.
• Possible Causes: Loose or corroded connections, intermittent sensor failure, wiring issues.
• Solutions: Check and secure all connections, replace the sensor if tests show intermittent failure, and repair or replace damaged wiring.
• Adsitco Products: Clutch position sensors, wiring harnesses, connector kits.

P0810 – Clutch Position Control Malfunction

• Description: Indicates a malfunction in the clutch position control system, affecting the ability to properly engage or disengage the clutch.
• Possible Causes: Faulty clutch actuator, malfunctioning clutch position sensor, ECM issues.
• Solutions: Inspect and potentially replace the clutch actuator, test and replace the clutch position sensor if needed, and diagnose ECM for errors.
• Adsitco Products: Clutch actuators, clutch position sensors, ECM components.

P0811 – Clutch Slippage Excessive

• Description: This code is triggered when excessive clutch slippage is detected, potentially leading to increased wear and tear on the transmission.
• Possible Causes: Worn clutch components, improper clutch adjustment, hydraulic system issues.
• Solutions: Replace worn clutch components, adjust the clutch mechanism as necessary, and inspect the hydraulic system for faults.
• Adsitco Products: Clutch kits, hydraulic system components.

P0812 – Reverse Input Circuit Malfunction

• Description: Indicates a malfunction within the reverse input circuit, affecting the vehicle’s ability to recognize engagement of the reverse gear.
• Possible Causes: Faulty reverse gear switch, wiring issues, or a bad connection.
• Solutions: Replace the reverse gear switch if faulty, inspect and repair wiring, and ensure connections are secure.
• Adsitco Products: Reverse gear switches, wiring harnesses.

P0813 – Reverse Output Circuit Malfunction

• Description: A malfunction in the reverse output circuit, impacting the signal or action associated with engaging reverse gear.
• Possible Causes: Faulty output sensors or circuits, wiring issues.
• Solutions: Inspect and potentially replace output sensors or related circuit components, repair wiring.
• Adsitco Products: Sensors, wiring harnesses.

P0814 – Trans Range Display Circuit Malfunction

• Description: This code indicates an issue with the circuit that displays the transmission gear range, possibly leading to incorrect gear display.
• Possible Causes: Faulty transmission range sensor, display issues, wiring malfunctions.
• Solutions: Replace the transmission range sensor if defective, repair or replace the display unit, and fix any wiring problems.
• Adsitco Products: Transmission range sensors, display units, wiring harnesses.

P0815 – Upshift Switch Circuit Malfunction

• Description: Malfunction in the circuit related to the upshift switch, affecting manual gear selection or shift signals in automatic transmissions.
• Possible Causes: Faulty upshift switch, wiring or connector issues.
• Solutions: Replace the upshift switch if needed, inspect and repair wiring and connectors.
• Adsitco Products: Shift switches, wiring harnesses, connectors.

P0816 – Downshift Switch Circuit Malfunction

• Description: Indicates a problem with the downshift switch circuit, potentially affecting gear selection and transmission performance.
• Possible Causes: Faulty downshift switch, wiring or connector issues.
• Solutions: Replace the downshift switch if defective, check and repair any wiring and connector problems.
• Adsitco Products: Shift switches, wiring harnesses, connectors.

P0817 – Starter Disable Circuit

• Description: This code signifies an issue within the circuit that disables the starter, possibly preventing the engine from starting.
• Possible Causes: Faulty relay or control module, wiring issues, security system malfunction.
• Solutions: Inspect and replace the relay or control module if necessary, repair wiring, and diagnose security system for faults.
• Adsitco Products: Relays, control modules, security system components.

P0818 – Driveline Disconnect Switch Input

• Description: Indicates a malfunction or unexpected input from the driveline disconnect switch, affecting driveline engagement or disengagement.
• Possible Causes: Faulty switch, wiring issues, or ECM problems.
• Solutions: Replace the switch if faulty, inspect and repair wiring, and check ECM for related faults.
• Adsitco Products: Switches, wiring harnesses, ECM components.

P0820 – Gear Lever X-Y Sensor Circuit

• Description: This code indicates a problem with the gear lever X-Y position sensor circuit, which affects the transmission’s ability to accurately detect gear lever position.
• Possible Causes: Faulty gear position sensor, wiring or connector issues.
• Solutions: Replace the gear position sensor if necessary, inspect and repair wiring and connectors.
• Adsitco Products: Gear position sensors, wiring harnesses, connectors.

P0821 – Gear Lever X Sensor Circuit

• Description: Malfunction in the gear lever X axis sensor circuit, impacting the detection of gear lever position along the X axis.
• Possible Causes: Faulty gear lever sensor, wiring issues, connector malfunctions.
• Solutions: Replace the gear lever sensor if defective, check and repair wiring and connectors.
• Adsitco Products: Gear lever sensors, wiring harnesses, connectors.

P0822 – Gear Lever Y Sensor Circuit

• Description: This code is set when there’s a malfunction in the gear lever Y-axis sensor circuit, impacting the transmission’s ability to detect the gear lever’s position along the Y-axis.
• Possible Causes: Faulty gear lever sensor, wiring issues, connector problems.
• Solutions: Replace the gear lever sensor if found defective, inspect and repair any wiring or connector issues.
• Adsitco Products: Gear lever sensors, wiring harnesses, connectors.

P0823 – Gear Lever X Sensor Circuit Intermittent Ckt

• Description: Indicates intermittent faults in the gear lever X sensor circuit, leading to unpredictable gear selection or transmission responses.
• Possible Causes: Loose connections, intermittent sensor faults, wiring harness issues.
• Solutions: Secure all connections, replace the sensor if intermittently failing, address any wiring harness issues.
• Adsitco Products: Gear lever sensors, wiring harnesses, connector kits.

P0824 – Gear Lever Y Sensor Circuit Intermittent Ckt

• Description: Similar to P0823, this code signals intermittent issues within the gear lever Y sensor circuit, affecting accurate gear position detection.
• Possible Causes: Intermittent sensor failures, loose or corroded connections, wiring problems.
• Solutions: Check for and secure loose connections, replace the sensor if necessary, and repair any wiring issues.
• Adsitco Products: Gear lever sensors, wiring harnesses, connectors.

P0830 – Clutch Position Switch A Circuit Malfunction

• Description: Indicates a malfunction in the Clutch Position Switch A circuit, potentially affecting clutch engagement and transmission operation.
• Possible Causes: Faulty clutch position switch, wiring or connector issues.
• Solutions: Replace the clutch position switch if defective, inspect and repair any wiring or connector problems.
• Adsitco Products: Clutch position switches, wiring harnesses, connectors.

P0831 – Clutch Position Switch A Circuit Low

• Description: This code is set when the Clutch Position Switch A circuit reports a low input, suggesting a potential short to ground.
• Possible Causes: Short circuit, faulty switch.
• Solutions: Inspect the circuit for shorts to ground, replace the clutch position switch if needed.
• Adsitco Products: Clutch position switches, wiring harnesses.

P0832 – Clutch Position Switch A Circuit High

• Description: Indicates a high input signal from the Clutch Position Switch A circuit, possibly due to a break or disconnection in the circuit.
• Possible Causes: Open circuit, faulty switch.
• Solutions: Check the circuit for breaks or disconnections, replace the clutch position switch if necessary.
• Adsitco Products: Clutch position switches, wiring harnesses.

P0833 – Clutch Position Switch B Circuit Malfunction

• Description: Malfunction in the Clutch Position Switch B circuit, affecting clutch operation and possibly transmission function.
• Possible Causes: Faulty clutch position switch, wiring or connector issues.
• Solutions: Replace the clutch position switch if faulty, inspect and repair wiring and connectors.
• Adsitco Products: Clutch position switches, wiring harnesses, connectors.

P0834 – Clutch Position Switch B Circuit Low

• Description: This code signifies a low input in the Clutch Position Switch B circuit, indicating a potential short to ground.
• Possible Causes: Short circuit, faulty switch.
• Solutions: Inspect for shorts to ground, replace the clutch position switch if necessary.
• Adsitco Products: Clutch position switches, wiring harnesses.

P0835 – Clutch Position Switch B Circuit High

• Description: Indicates a high input signal in the Clutch Position Switch B circuit, likely due to a break in the circuit.
• Possible Causes: Open circuit, faulty switch.
• Solutions: Check for open circuits, replace the clutch position switch if needed.
• Adsitco Products: Clutch position switches, wiring harnesses.

P0836 – 4 Wheel Drive Switch Circuit Malfunction

• Description: Malfunction in the circuit of the 4-wheel drive switch, affecting the operation of the 4WD system.
• Possible Causes: Faulty 4WD switch, wiring issues, transfer case problems.
• Solutions: Replace the 4WD switch if defective, inspect and repair wiring, diagnose transfer case issues.
• Adsitco Products: 4WD switches, wiring harnesses, transfer case components.

P0837 – 4 Wheel Drive Switch CKT Range/Perf

• Description: This code indicates that the 4-wheel drive switch circuit is out of the expected range or performing poorly, potentially leading to issues with engaging or disengaging 4WD.
• Possible Causes: Maladjusted switch, faulty switch, wiring issues.
• Solutions: Adjust or replace the 4WD switch as necessary, inspect and repair any wiring problems.
• Adsitco Products: 4WD switches, wiring harnesses.

P0838 – 4 Wheel Drive Switch Circuit Low

• Description: Indicates a low input signal from the 4-wheel drive switch circuit, suggesting a possible short to ground.
• Possible Causes: Short circuit, faulty 4WD switch.
• Solutions: Inspect for shorts to ground, replace the 4WD switch if necessary.
• Adsitco Products: 4WD switches, wiring harnesses.

P0839 – 4 Wheel Drive Switch Circuit High

• Description: Signals a high input from the 4-wheel drive switch circuit, likely due to a break in the circuit.
• Possible Causes: Open circuit, faulty 4WD switch.
• Solutions: Check for open circuits, replace the 4WD switch if needed.
• Adsitco Products: 4WD switches, wiring harnesses.

P0840 – Trans Fluid Press Sensor/Switch A Circuit Malfunction

• Description: Indicates a malfunction in the transmission fluid pressure sensor/switch A circuit, affecting transmission operation and fluid pressure readings.
• Possible Causes: Faulty sensor/switch, wiring or connector issues, hydraulic problems.
• Solutions: Replace the sensor/switch if defective, repair any wiring or connector problems, diagnose hydraulic system issues.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0841 – Trans Fluid Press Sensor/Switch A CKT Range/Perf

• Description: This code is triggered when the transmission fluid pressure sensor/switch A circuit is out of range or performing poorly, potentially affecting transmission function.
• Possible Causes: Faulty sensor/switch, fluid level or quality issues, hydraulic circuit problems.
• Solutions: Replace the sensor/switch if necessary, check and correct fluid level and quality, inspect hydraulic circuit.
• Adsitco Products: Pressure sensors/switches, transmission fluids, hydraulic system components.

P0842 – Trans Fluid Press Sensor/Switch A Circuit Low

• Description: Indicates a low input signal from the transmission fluid pressure sensor/switch A circuit, suggesting a potential electrical problem or hydraulic issue.
• Possible Causes: Electrical short, faulty sensor/switch, low fluid pressure.
• Solutions: Inspect for electrical shorts, replace the sensor/switch if faulty, diagnose and correct any hydraulic issues causing low pressure.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0843 – Trans Fluid Press Sensor/Switch A Circuit High

• Description: Signifies a high input signal from the transmission fluid pressure sensor/switch A circuit, possibly due to an electrical issue or excessive fluid pressure.
• Possible Causes: Electrical open, faulty sensor/switch, high fluid pressure.
• Solutions: Check for electrical opens, replace the sensor/switch if necessary, address any causes of excessive fluid pressure.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0844 – Trans Fluid Press Sensor/Switch A CKT Intermittent

• Description: This code indicates intermittent faults in the transmission fluid pressure sensor/switch A circuit, leading to erratic transmission behavior.
• Possible Causes: Loose connections, intermittent sensor/switch faults, wiring harness issues.
• Solutions: Secure all connections, replace the sensor/switch if intermittently failing, address any wiring harness issues.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, connector kits.

P0845 – Trans Fluid Press Sensor/Switch B Circuit Malfunction

• Description: Malfunction in the transmission fluid pressure sensor/switch B circuit, potentially affecting transmission operation and fluid pressure monitoring.
• Possible Causes: Faulty sensor/switch, wiring or connector issues, hydraulic problems.
• Solutions: Replace the sensor/switch if defective, repair any wiring or connector problems, diagnose hydraulic system issues.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0846 – Trans Fluid Press Sensor/Switch B CKT Range/Perf

• Description: Indicates that the transmission fluid pressure sensor/switch B circuit is out of range or performing poorly, potentially affecting transmission function.
• Possible Causes: Faulty sensor/switch, fluid level or quality issues, hydraulic circuit problems.
• Solutions: Replace the sensor/switch if necessary, check and correct fluid level and quality, inspect hydraulic circuit.
• Adsitco Products: Pressure sensors/switches, transmission fluids, hydraulic system components.

P0847 – Trans Fluid Press Sensor/Switch B Circuit Low

• Description: Signals a low input from the transmission fluid pressure sensor/switch B circuit, suggesting a potential electrical problem or hydraulic issue.
• Possible Causes: Electrical short, faulty sensor/switch, low fluid pressure.
• Solutions: Inspect for electrical shorts, replace the sensor/switch if faulty, diagnose and correct any hydraulic issues causing low pressure.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0848 – Trans Fluid Press Sensor/Switch B Circuit High

• Description: Indicates a high input signal from the transmission fluid pressure sensor/switch B circuit, possibly due to an electrical issue or excessive fluid pressure.
• Possible Causes: Electrical open, faulty sensor/switch, high fluid pressure.
• Solutions: Check for electrical opens, replace the sensor/switch if necessary, address any causes of excessive fluid pressure.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, hydraulic system components.

P0849 – Trans Fluid Press Sensor/Switch B CKT Intermittent

• Description: This code is set when there are intermittent faults in the transmission fluid pressure sensor/switch B circuit, leading to unpredictable transmission behavior.
• Possible Causes: Loose connections, intermittent sensor/switch faults, wiring harness issues.
• Solutions: Secure all connections, replace the sensor/switch if intermittently failing, address any wiring harness issues.
• Adsitco Products: Pressure sensors/switches, wiring harnesses, connector kits.

P1000-2000 Mercedes Fault Codes

P1000 – Electronic Gear Selector Module: Defective N15/5

• Description: Indicates a fault in the electronic gear selector module, specifically with the N15/5 component, affecting gear selection and transmission functionality.
• Possible Causes: Faulty gear selector module, wiring issues, CAN (Controller Area Network) communication problems.
• Solutions: Replace the electronic gear selector module if defective, inspect and repair wiring, diagnose CAN communication issues.
• Adsitco Products: Gear selector modules, wiring harnesses.

P1228 – yet unknown code on 1997 C 220 CDI

• Description: This code is not clearly defined but may relate to issues specific to the 1997 C 220 CDI model, possibly involving fuel or engine management systems.
• Possible Causes: Since it’s unspecified, potential causes could range from fuel system components to sensors or ECM issues.
• Solutions: Comprehensive diagnostics to identify the root cause, followed by targeted repairs or component replacement.
• Adsitco Products: Fuel system components, sensors, ECM units.

P1386 – Knock Control

• Description: Indicates a problem with the knock control system, which could affect engine performance and efficiency by failing to properly adjust the ignition timing to prevent knocking.
• Possible Causes: Faulty knock sensors, improper fuel octane, engine mechanical issues.
• Solutions: Replace faulty knock sensors, ensure use of correct fuel octane, inspect engine for mechanical problems.
• Adsitco Products: Knock sensors, engine components.

P1570 – Intermittent No-Start Immobiliser Module

• Description: This code signifies intermittent issues with the immobilizer module, leading to occasional no-start conditions.
• Possible Causes: Faulty immobilizer module, wiring issues, key fob problems.
• Solutions: Replace or reprogram the immobilizer module, repair wiring, check or replace key fob.
• Adsitco Products: Immobilizer modules, wiring harnesses, key fobs.

P1747 – Electronic Gear Selector Module: Defective Interaction of CAN with control unit A1 (instrument cluster)

• Description: Fault in the communication between the electronic gear selector module and the instrument cluster via the CAN network, possibly affecting gear display and selection.
• Possible Causes: Faulty gear selector module, instrument cluster issues, CAN communication faults.
• Solutions: Replace defective modules, diagnose and repair CAN communication issues.
• Adsitco Products: Gear selector modules, instrument clusters, wiring harnesses.

P1750 – Electronic Gear Selector Module: Very low control unit supply voltage

• Description: The control unit for the electronic gear selector module is receiving very low supply voltage, potentially affecting its operation.
• Possible Causes: Weak battery, poor connections, faulty wiring.
• Solutions: Test and replace the battery if necessary, check connections and wiring for faults, and repair or replace as needed.
• Adsitco Products: Batteries, wiring harnesses, connectors.

P1832 – Electronic Gear Selector Module: SHORT in circuit N15/5 output stage

• Description: A short circuit in the output stage of the electronic gear selector module, potentially leading to malfunction or failure in gear selection.
• Possible Causes: Short circuit within the module or related wiring, faulty gear selector module.
• Solutions: Inspect for short circuits and repair, replace the gear selector module if necessary.
• Adsitco Products: Gear selector modules, wiring harnesses.

P1910 – Electronic Gear Selector Module: Control Unit over voltage

• Description: The control unit of the electronic gear selector module is experiencing over-voltage conditions, which could damage the module or affect its performance.
• Possible Causes: Faulty voltage regulator, electrical system issues, improper charging.
• Solutions: Check and replace the voltage regulator if faulty, diagnose and repair electrical system issues.
• Adsitco Products: Voltage regulators, electrical system components.

P1912 – Electronic Gear Selector Module: Weak touch push button voltage

• Description: Low voltage detected at the touch push button of the electronic gear selector module, indicating a potential issue with button operation or signal transmission.
• Possible Causes: Faulty button, wiring issues, low voltage supply.
• Solutions: Replace the faulty button, inspect and repair wiring, ensure adequate voltage supply.
• Adsitco Products: Gear selector module components, wiring harnesses.

P2000 – NOx Trap Efficiency Below Threshold (Bank 1)

P2001 – NOx Trap Efficiency Below Threshold (Bank 2)

P2003 – Particulate Trap Efficiency Below Threshold (Bank 1)

P2004 – Particulate Trap Efficiency Below Threshold (Bank 2)

• Description: These codes indicate that the NOx trap or particulate trap efficiency for the specified bank is below the threshold, affecting emissions control and possibly leading to increased emissions.
• Possible Causes: Faulty NOx trap/particulate filter, sensor issues, exhaust leaks.
• Solutions: Replace the NOx trap or particulate filter if necessary, repair any exhaust leaks, replace faulty sensors.
• Adsitco Products: NOx traps, particulate filters, exhaust system components, sensors.

P2031 – Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)

P2032 – Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)

P2033 – Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)

• Description: These codes relate to issues with the exhaust gas temperature sensor circuit for Bank 1 Sensor 2, indicating potential problems with temperature readings that could affect engine performance and emissions control.
• Possible Causes: Faulty sensor, wiring or connector issues, exhaust system problems.
• Solutions: Replace the exhaust gas temperature sensor if defective, inspect and repair wiring and connectors, check the exhaust system for issues.
• Adsitco Products: Exhaust gas temperature sensors, wiring harnesses, exhaust system components.

P2080 – Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)

P2081 – Exhaust Gas Temperature Sensor Circuit intermittent (Bank 1 Sensor 1)

• Description: Indicate issues with the exhaust gas temperature sensor for Bank 1 Sensor 1, either in terms of range/performance or intermittent operation, affecting sensor accuracy and engine management.
• Possible Causes: Faulty sensor, intermittent wiring or connector problems, exhaust system issues.
• Solutions: Replace the exhaust gas temperature sensor if necessary, repair any wiring or connector issues, inspect the exhaust system.
• Adsitco Products: Exhaust gas temperature sensors, wiring harnesses, exhaust components.

P2100 – Throttle Actuator Control Motor Circuit/Open

P2101 – Throttle Actuator Control Motor Circuit Range/Performance

• Description: These codes indicate problems with the throttle actuator control motor circuit, affecting throttle response and engine power.
• Possible Causes: Faulty throttle actuator, wiring or connector issues, ECM faults.
• Solutions: Replace the throttle actuator if defective, inspect and repair wiring and connectors, diagnose ECM for issues.
• Adsitco Products: Throttle actuators, wiring harnesses, ECM units.

P2208 – Transmission: The speed of Y3/6n2 to Y3/6n3 is excessive

• Description: Indicates a transmission issue where the speed differential between sensors Y3/6n2 and Y3/6n3 is excessive, potentially affecting transmission performance and shift quality.
• Possible Causes: Faulty transmission speed sensors, internal transmission issues, ECM problems.
• Solutions: Replace the faulty speed sensors, inspect the transmission for internal problems, diagnose ECM for faults.
• Adsitco Products: Transmission speed sensors, ECM components, transmission parts.

Mercedes Body Fault Codes

B1000 – HRA Headlamp Range Adjustment: Supply Voltage Too Low (Undervoltage)

• Description: The control unit’s supply voltage is below the expected level, potentially affecting headlamp range adjustment.
• Possible Causes: Low vehicle battery voltage, faulty wiring to the control unit, defective control unit.
• Solutions: Check and charge the vehicle battery, inspect wiring for damage and repair, replace the control unit if necessary.
• Adsitco Products: Control units, wiring harnesses.

B1004 – LCP Lower Control Panel: Control Unit Does Not Match Vehicle Type

• Description: The installed lower control panel control unit is incompatible with the vehicle’s type.
• Possible Causes: Incorrect control unit installed.
• Solutions: Verify the control unit’s part number and replace it with the correct one for the vehicle type.
• Adsitco Products: Control units for lower control panel.

B1056 – Automatic Air Conditioning: Problem in CAN Communication with Control Unit DCM-RL

• Description: Communication issue between the automatic air conditioning system and the DCM-RL control unit via the CAN network.
• Possible Causes: Faulty wiring or connections in the CAN network, defective DCM-RL control unit.
• Solutions: Check the CAN network wiring and connections, replace the DCM-RL control unit if necessary.
• Adsitco Products: DCM-RL control units, CAN network wiring.

B1201 – Electric Seat Adjustment Front Left: Hall Sensor Front Height M27m3

• Description: The hall sensor for the front height adjustment of the front left electric seat is malfunctioning.
• Possible Causes: Faulty hall sensor, wiring issue.
• Solutions: Replace the hall sensor, inspect and repair wiring.
• Adsitco Products: Hall sensors, wiring harnesses for electric seats.

B1213/B1214 – If Seat Memory Installed: Exterior Right Rearview Mirror Voltage Faulty

• Description: The voltage for the external right rearview mirror is incorrect when seat memory is installed.
• Possible Causes: Faulty wiring or connection, defective mirror motor or control module.
• Solutions: Inspect and repair wiring, replace the mirror motor or control module as needed.
• Adsitco Products: Rearview mirror motors, control modules.

B1226 – In-Car Temperature Sensor (B10/4)

• Description: Fault detected in the in-car temperature sensor, affecting climate control accuracy.
• Possible Causes: Faulty sensor, wiring issue, or poor connection.
• Solutions: Replace the sensor, inspect and repair wiring and connections.
• Adsitco Products: In-car temperature sensors, wiring harnesses.

B1227 – Outside Temperature Indicator Temp Sensor (014)

• Description: The outside temperature sensor is malfunctioning, potentially leading to incorrect temperature display.
• Possible Causes: Defective sensor, damaged wiring.
• Solutions: Replace the outside temperature sensor, inspect and repair wiring.
• Adsitco Products: Outside temperature sensors, wiring harnesses.

B1128/B1229 – Heater Core Temperature (B10/1)

• Description: Anomaly detected in the heater core temperature sensor, affecting cabin heating performance.
• Possible Causes: Faulty temperature sensor, wiring issues.
• Solutions: Replace the temperature sensor, inspect and repair wiring.
• Adsitco Products: Heater core temperature sensors, wiring harnesses.

B1230 – Evaporator Temperature Sensor (B10/6)

• Description: Fault in the evaporator temperature sensor, potentially affecting air conditioning efficiency.
• Possible Causes: Defective sensor, wiring problems.
• Solutions: Replace the evaporator temperature sensor, check and repair wiring.
• Adsitco Products: Evaporator temperature sensors, wiring harnesses.

B1231 – ECT Sensor (B11/4)

• Description: Engine Coolant Temperature (ECT) sensor reporting irregular readings, affecting engine performance and cooling.
• Possible Causes: Faulty ECT sensor, damaged wiring or connectors.
• Solutions: Replace the ECT sensor, inspect and repair wiring.
• Adsitco Products: ECT sensors, wiring harnesses.

B1232 – Refrigerant Pressure Sensor (B12)

• Description: The refrigerant pressure sensor is reporting incorrect data, possibly affecting air conditioning performance.
• Possible Causes: Defective sensor, leaks in the AC system, wiring issues.
• Solutions: Replace the refrigerant pressure sensor, check the AC system for leaks, repair wiring.
• Adsitco Products: Refrigerant pressure sensors, AC leak repair kits, wiring harnesses.

B1233 – Refrigerant Temperature Sensor (B12/1)

• Description: Anomaly in refrigerant temperature readings, which may impact air conditioning operation.
• Possible Causes: Malfunctioning sensor, wiring faults.
• Solutions: Replace the refrigerant temperature sensor, inspect and repair wiring.
• Adsitco Products: Refrigerant temperature sensors, wiring harnesses.

B1234 – Sun Sensor (B32)

• Description: The sun sensor, used for climate control system adjustment, is not functioning properly.
• Possible Causes: Defective sensor, wiring issues.
• Solutions: Replace the sun sensor, check and repair wiring.
• Adsitco Products: Sun sensors, wiring harnesses.

B1235 – Emissions Sensor (B31)

• Description: Fault detected in the emissions sensor, potentially affecting vehicle emissions performance.
• Possible Causes: Faulty sensor, wiring or connection issues.
• Solutions: Replace the emissions sensor, inspect and repair wiring and connections.
• Adsitco Products: Emissions sensors, wiring harnesses.

B1241 – Refrigerant Fill

• Description: Issue related to the refrigerant fill level, possibly indicating a leak or undercharging in the AC system.
• Possible Causes: AC system leak, incorrect refrigerant charge.
• Solutions: Check for leaks, recharge the AC system with the correct amount of refrigerant.
• Adsitco Products: AC leak detection kits, refrigerant.

B1246 – PTS Parktronic: Sensor or Cable Fault

• Description: Fault in the Parktronic system, particularly with the left outer sensor in the front bumper, indicating a poor connection or sensor/cable fault.
• Possible Causes: Loose or poor sensor connection, faulty sensor or cable.
• Solutions: Check the sensor connection, replace the sensor or cable if faulty.
• Adsitco Products: Parktronic sensors, wiring harnesses.

B1310 – Left/Window Airbag Sensor Defective

• Description: The left/window airbag sensor is malfunctioning, potentially affecting airbag deployment.
• Possible Causes: Defective sensor.
• Solutions: Replace the left/window airbag sensor.
• Adsitco Products: Airbag sensors.

B1315 – Front Passenger Child Seat Recognition Problem

• Description: Issue detected with the front passenger child seat recognition system, which may affect airbag deployment.
• Possible Causes: Faulty seat recognition sensor, wiring issues.
• Solutions: Replace the seat recognition sensor, inspect and repair wiring.
• Adsitco Products: Child seat recognition sensors, wiring harnesses.

B1416 – Coolant Circulation Pump (M13)

• Description: The coolant circulation pump is not operating correctly, potentially affecting engine cooling efficiency.
• Possible Causes: Faulty pump, electrical issues.
• Solutions: Replace the coolant circulation pump, inspect and repair electrical connections.
• Adsitco Products: Coolant circulation pumps, electrical repair kits.

B1417 – Duovalve (Y21y1), Left

• Description: The left duovalve, which controls coolant flow for climate control, is malfunctioning.
• Possible Causes: Faulty duovalve, wiring or control issues.
• Solutions: Replace the left duovalve, inspect and repair wiring.
• Adsitco Products: Duovalves, wiring harnesses.

B1418 – Duovalve (Y21y2), Right

• Description: The right duovalve is not functioning properly, affecting climate control temperature regulation.
• Possible Causes: Defective duovalve, electrical problems.
• Solutions: Replace the right duovalve, check and repair electrical issues.
• Adsitco Products: Duovalves, electrical repair components.

B1419 – Electromagnetic Clutch (A9k1)

• Description: The electromagnetic clutch is experiencing issues, potentially affecting the performance of driven components.
• Possible Causes: Faulty clutch, electrical malfunctions.
• Solutions: Replace the electromagnetic clutch, inspect and repair electrical system.
• Adsitco Products: Electromagnetic clutches, electrical system components.

B1420 – Idle Speed Increase

• Description: The engine’s idle speed is higher than expected, which may affect vehicle operation and fuel efficiency.
• Possible Causes: Malfunctioning idle control valve, vacuum leaks, software issues.
• Solutions: Replace or clean the idle control valve, check for vacuum leaks, update engine control module software.
• Adsitco Products: Idle control valves, diagnostic tools for software updates.

B1421 – Pulse Module (N05)

• Description: The pulse module, responsible for controlling various timed functions, is not operating correctly.
• Possible Causes: Defective module, wiring faults.
• Solutions: Replace the pulse module, inspect and repair wiring.
• Adsitco Products: Pulse modules, wiring harnesses.

B1422 – Series Interface (K1) Connection to Instrument Cluster (A1)

• Description: There is a problem with the series interface connection between the vehicle’s electronic systems and the instrument cluster.
• Possible Causes: Faulty instrument cluster, damaged wiring or connectors.
• Solutions: Replace or repair the instrument cluster, inspect and repair wiring.
• Adsitco Products: Instrument clusters, connector and wiring repair kits.

B1423 – Switchover Valve Block (Y11)

• Description: The switchover valve block, used for routing vacuum or pressure signals, is malfunctioning.
• Possible Causes: Faulty valve block, vacuum leaks, electrical issues.
• Solutions: Replace the switchover valve block, check for vacuum leaks, inspect electrical connections.
• Adsitco Products: Switchover valve blocks, vacuum system components.

B1424 – Activated Charcoal Filler Actuator (A32m2) Open/Closed

• Description: The activated charcoal filler actuator, part of the fuel vapor recovery system, is either stuck open or closed.
• Possible Causes: Faulty actuator, blockage, electrical faults.
• Solutions: Replace the actuator, clear blockages, and check electrical wiring and connections.
• Adsitco Products: Activated charcoal filler actuators, wiring harnesses.

B1432 – Non-USA DTC

• Description: A diagnostic trouble code specific to vehicles outside the USA, indicating an unspecified issue.
• Possible Causes: Varies by specific vehicle and region.
• Solutions: Refer to region-specific documentation for troubleshooting and repair.
• Adsitco Products: General diagnostic tools and equipment.

B1459 – Series Interface (K2) Connection to Instrument Cluster (A1)

• Description: There’s an issue with the series interface (K2) connection to the instrument cluster, affecting communication.
• Possible Causes: Damaged wiring or connectors, faulty instrument cluster.
• Solutions: Inspect and repair wiring and connectors, replace the instrument cluster if necessary.
• Adsitco Products: Instrument cluster units, wiring repair kits.

B1462 – Wide Open Throttle (WOT) Position Signal Diesel Engines

• Description: The signal from the wide open throttle position sensor in diesel engines is out of expected range.
• Possible Causes: Faulty throttle position sensor, wiring issues, ECM software needs update.
• Solutions: Replace the throttle position sensor, inspect and repair wiring, update ECM software.
• Adsitco Products: Throttle position sensors, ECM diagnostic and programming tools.

B1476 – Airbag Malfunction Indicator and Warning Lamp Is Defective

• Description: The airbag malfunction indicator lamp (MIL) is not operating correctly, possibly failing to warn of issues.
• Possible Causes: Faulty MIL, wiring or connection issues.
• Solutions: Replace the airbag MIL, inspect and repair wiring and connections.
• Adsitco Products: Airbag malfunction indicator lamps, wiring harnesses.

B1481/B1489 – HRA: Headlamp Range Adjustment Motor Faults

• Description: Issues with the headlamp range adjustment motor, including shorts to ground or open/short to positive.
• Possible Causes: Faulty motor, damaged wiring, or connectors.
• Solutions: Replace the faulty motor, inspect and repair wiring and connectors.
• Adsitco Products: Headlamp range adjustment motors, wiring repair kits.

B1492 – HRA: Left Headlamp Range Adjustment Motor Short to Positive

• Description: The left headlamp range adjustment motor has a short to the positive terminal, affecting headlamp positioning.
• Possible Causes: Faulty motor, wiring or connector issues.
• Solutions: Replace the motor, inspect and repair wiring.
• Adsitco Products: Headlamp range adjustment motors, wiring harnesses.

B1617/B1618 – License Plate Lamp Defective

• Description: Either the left or right license plate lamp is not functioning properly.
• Possible Causes: Burnt-out bulb, faulty wiring or connections.
• Solutions: Replace the bulb, inspect and repair wiring and connections.
• Adsitco Products: License plate lamps, wiring repair components.

B1628 – Turn Signal Lamp Defective in Module E2 (Right Front Headlamp Unit)

• Description: The turn signal lamp within the right front headlamp unit is defective.
• Possible Causes: Faulty lamp, wiring issues, or problems within the headlamp unit.
• Solutions: Replace the turn signal lamp, inspect the headlamp unit and wiring.
• Adsitco Products: Turn signal lamps, headlamp units, wiring harnesses.

B1703 – Intermittent No Start in AAM Immobiliser Module

• Description: The AAM immobilizer module intermittently prevents the vehicle from starting.
• Possible Causes: Faulty AAM module, wiring issues, key recognition problems.
• Solutions: Diagnose and replace the AAM module if necessary, inspect wiring, and ensure keys are properly recognized.
• Adsitco Products: AAM immobilizer modules, diagnostic tools.

B1729 – PSE Pneumatic System Doorlock Control Module A37

• Description: Issue with the PSE pneumatic system doorlock control module, affecting door locking/unlocking.
• Possible Causes: Faulty module, leaks in the pneumatic system, electrical issues.
• Solutions: Replace the PSE module, check for leaks in the pneumatic system, inspect and repair electrical connections.
• Adsitco Products: PSE pneumatic system modules, leak detection kits, electrical repair kits.

B1736 – Navigation System’s CD Player Issues

• Description: Problems with the navigation system’s CD player, such as reading CDs or data blocks.
• Possible Causes: Faulty CD player, scratched or damaged CDs.
• Solutions: Repair or replace the CD player, use undamaged CDs.
• Adsitco Products: Navigation system CD players, navigation CDs.

B1768 – Faulty Open Data Flap Limit Switch

• Description: The data flap limit switch is open, indicating a malfunction in the switch mechanism.
• Possible Causes: Faulty switch, mechanical failure.
• Solutions: Replace the data flap limit switch.
• Adsitco Products: Data flap limit switches.

B1773 – HRA: Zero Position Programming Issue

• Description: Zero position programming for headlamp range adjustment has not been carried out or is not possible.
• Possible Causes: Programming error, faulty HRA module.
• Solutions: Perform zero position programming, replace the HRA module if necessary.
• Adsitco Products: HRA modules, programming tools.

B1850 – Electric Seat Adjustment Front Right: CAN Communication Interrupted

• Description: CAN communication with the DCM (Door Control Module) for the front right electric seat is interrupted.
• Possible Causes: Faulty DCM, wiring or connector issues.
• Solutions: Replace the DCM, inspect and repair wiring and connectors.
• Adsitco Products: Door control modules, wiring repair kits.

C-Level Mercedes Fault Codes

C1010 – Battery Voltage Low

• Description: The vehicle’s battery voltage is below the normal operating range, potentially affecting the vehicle’s electrical systems.
• Possible Causes: Weak or failing battery, poor charging system output, electrical drains.
• Solutions: Test and replace the battery if necessary, inspect the charging system, check for parasitic drains.
• Adsitco Products: Replacement batteries, charging system components.

C1011 – ASR/ETS/ESP Circuit Open or Shorted

• Description: An open or short circuit within the ASR (Acceleration Slip Regulation), ETS (Electronic Traction Support), or ESP (Electronic Stability Program) systems, affecting traction and stability control.
• Possible Causes: Faulty wiring or connectors, defective control modules.
• Solutions: Inspect and repair wiring, replace control modules as needed.
• Adsitco Products: Control modules for ASR, ETS, ESP systems, wiring repair components.

C1012 – Battery Voltage High

• Description: The vehicle’s battery voltage is above the normal operating range, which may damage electrical components.
• Possible Causes: Faulty alternator or voltage regulator, electrical system faults.
• Solutions: Check and replace the alternator or voltage regulator if necessary, inspect electrical system.
• Adsitco Products: Alternators, voltage regulators.

C1020 – CAN Communication Fault

• Description: A fault in the Controller Area Network (CAN) communication system, potentially affecting multiple vehicle systems.
• Possible Causes: Faulty ECU, damaged wiring or connectors, CAN bus faults.
• Solutions: Diagnose and repair CAN bus system, replace faulty ECU or wiring.
• Adsitco Products: ECUs, wiring harnesses, CAN bus diagnostic tools.

C1021 – CAN Communication With EA/CC/ISC Control Module Interrupted

• Description: Communication with the Electronic Accelerator/Cruise Control/Idle Speed Control module is interrupted.
• Possible Causes: Faulty control module, broken wires or bad connections.
• Solutions: Replace control module, inspect and repair wiring.
• Adsitco Products: EA/CC/ISC control modules, wiring repair kits.

C1024 – CAN Communication With Engine Control Module Interrupted

• Description: Communication with the engine control module (ECM) is interrupted, affecting engine performance and diagnostics.
• Possible Causes: Faulty ECM, damaged wiring.
• Solutions: Replace ECM, inspect and repair wiring.
• Adsitco Products: Engine control modules, wiring harnesses.

C1025 – CAN Communication BAS Communication With ESP Control Unit Faulty

• Description: Faulty communication between the Brake Assist System (BAS) and the Electronic Stability Program (ESP) control unit.
• Possible Causes: Defective BAS or ESP control unit, wiring issues.
• Solutions: Replace control units as necessary, inspect and repair wiring.
• Adsitco Products: BAS and ESP control units, wiring repair components.

C1100 – Left Front Axle VSS Circuit Fault

• Description: Vehicle Speed Sensor (VSS) circuit fault on the left front axle, affecting speedometer function and ABS.
• Possible Causes: Faulty VSS, damaged wiring or connectors.
• Solutions: Replace the VSS, inspect and repair wiring.
• Adsitco Products: Vehicle speed sensors, wiring harnesses.

C1101 – Right Front Axle VSS Circuit Fault

• Description: VSS circuit fault on the right front axle, potentially affecting vehicle speed readings and stability control systems.
• Possible Causes: Defective VSS, wiring faults.
• Solutions: Replace faulty VSS, check and repair wiring.
• Adsitco Products: Vehicle speed sensors, electrical repair kits.

C1102 – ETS/ASR, ABS Left Axle VSS Circuit Fault

• Description: The left axle VSS for ETS/ASR and ABS systems is faulty, possibly leading to malfunctioning traction and brake control.
• Possible Causes: Damaged sensor, wiring issues.
• Solutions: Replace the sensor, inspect and repair wiring.
• Adsitco Products: Speed sensors, wiring harnesses.

C1103 – Right Rear Axle VSS Circuit Fault

• Description: Vehicle Speed Sensor (VSS) circuit fault detected at the right rear axle, which may impact ABS and traction control functionality.
• Possible Causes: Faulty VSS, damaged wiring or poor connections.
• Solutions: Replace the VSS, inspect and repair any faulty wiring.
• Adsitco Products: Vehicle speed sensors, wiring harnesses for repairs.

C1121 – AIRmatic: Fault in Component B22/3 (Level Sensor)

• Description: A malfunction in the AIRmatic system’s level sensor, potentially affecting vehicle stability and ride comfort.
• Possible Causes: Faulty level sensor, wiring issues, or air suspension problems.
• Solutions: Replace the level sensor, check wiring and air suspension components.
• Adsitco Products: AIRmatic level sensors, air suspension components, wiring repair kits.

C1122 – AIRmatic: Fault in Component B22/4 (Level Sensor)

• Description: Similar to C1121, indicating a fault in another AIRmatic system level sensor, impacting suspension performance.
• Possible Causes: Defective level sensor, electrical connection issues, air system faults.
• Solutions: Replace faulty sensor, inspect electrical system, check air suspension.
• Adsitco Products: Level sensors for AIRmatic systems, air suspension repair parts.

C1123 – AIRmatic: Fault in Component B22/6 (Level Sensor)

• Description: Identifies a problem with yet another AIRmatic suspension level sensor, affecting vehicle leveling.
• Possible Causes: Damaged sensor, wiring faults, air suspension issues.
• Solutions: Replace the level sensor, repair wiring, and address any air suspension concerns.
• Adsitco Products: Suspension level sensors, air suspension kits, and wiring harnesses.

C1132/C1133/C1135 – AIRmatic: Fault in Component B22/8, B22/9, and Repeat of B22/3 (Level Sensor)

• Description: These codes flag faults in various AIRmatic system level sensors, crucial for maintaining proper vehicle posture and comfort.
• Possible Causes: Each code points to issues with respective level sensors, potentially including sensor failure, wiring damage, or air suspension system defects.
• Solutions: Replace indicated level sensors, ensure wiring integrity, and check air suspension system functionality.
• Adsitco Products: Comprehensive range of AIRmatic level sensors, complete air suspension solutions, electrical repair components.

C1140 – BAS Light, Play in Steering Column Causes Steering Angle Sensor to Lose Memory

• Description: Indicates an issue with the Brake Assist System (BAS), potentially due to movement in the steering column affecting the steering angle sensor’s memory.
• Possible Causes: Loose steering column, faulty steering angle sensor.
• Solutions: Secure steering column, replace steering angle sensor if necessary.
• Adsitco Products: Steering angle sensors, steering column repair kits.

C1142 – ABS Lateral Acceleration Sensor Open/Shorted

• Description: The lateral acceleration sensor for the ABS system is either open or shorted, possibly affecting vehicle stability control.
• Possible Causes: Faulty sensor, wiring or connector issues.
• Solutions: Replace the lateral acceleration sensor, inspect and repair wiring.
• Adsitco Products: ABS sensors, wiring repair kits.

C1144 – AIRmatic: Fault in Component B7 (Pressure Sensor)

• Description: A fault detected in the AIRmatic system’s pressure sensor, which may affect suspension performance.
• Possible Causes: Defective pressure sensor, wiring problems, or system leaks.
• Solutions: Replace pressure sensor, check for wiring issues and air leaks.
• Adsitco Products: AIRmatic pressure sensors, leak detection tools, and repair components.

C1200 – Stop Light Switch Open/Shorted/Implausible

• Description: Fault detected in the stop light switch circuit, potentially affecting brake light functionality.
• Possible Causes: Faulty stop light switch, wiring issues.
• Solutions: Replace the stop light switch, inspect and repair any damaged wiring.
• Adsitco Products: Stop light switches, electrical wiring kits.

C1300/C1303 – Left/Right Front Axle Solenoid Valve (Hold) Open/Shorted

• Description: Issues with the solenoid valves for holding the left/right front axle, affecting suspension and stability.
• Possible Causes: Defective solenoid valves, wiring or connection faults.
• Solutions: Replace faulty solenoid valves, ensure wiring integrity.
• Adsitco Products: Solenoid valves for suspension systems, wiring repair kits.

C1311 – Switchover Solenoid Valve (Release) Open/Shorted

• Description: A fault in the switchover solenoid valve used for releasing suspension pressure, potentially impacting ride quality.
• Possible Causes: Malfunctioning solenoid valve, electrical issues.
• Solutions: Replace the solenoid valve, check electrical connections and wiring.
• Adsitco Products: Suspension solenoid valves, electrical components.

C1312 – Master Cylinder Switchover Valve

• Description: Fault detected in the master cylinder switchover valve, possibly affecting braking performance.
• Possible Causes: Faulty valve, hydraulic system issues.
• Solutions: Replace the switchover valve, inspect the brake hydraulic system.
• Adsitco Products: Master cylinder switchover valves, brake system repair kits.

C1401 – High Pressure Return Pump Circuit Open/Shorted; Will Not Shut Off

• Description: The high-pressure return pump circuit is either open or shorted, and the pump may not shut off as expected.
• Possible Causes: Faulty pump, electrical circuit issues.
• Solutions: Replace the high-pressure return pump, repair any electrical faults.
• Adsitco Products: High-pressure pumps, electrical repair components.

C1501 – SPS P-Valve

• Description: Issue detected with the SPS P-Valve, affecting suspension performance.
• Possible Causes: Faulty valve, control system problems.
• Solutions: Replace the SPS P-Valve, diagnose control system.
• Adsitco Products: SPS valves, diagnostic tools for suspension systems.

C1504 – BAS Light, Repeat of Earlier Code Regarding Steering Angle Sensor

• Description: This code reiterates the issue with the BAS system and steering angle sensor due to play in the steering column.
• Possible Causes: See C1140 for detailed causes and solutions.
• Adsitco Products: Steering system components, BAS system parts.

C1512 – Brakes Overheated

• Description: Indicates that the brake system has overheated, potentially reducing braking efficiency.
• Possible Causes: Excessive braking, faulty brake components.
• Solutions: Check and replace brake components as necessary, ensure proper brake system operation.
• Adsitco Products: Brake pads, rotors, cooling components.

C1600 – Temperature After Engine Is Turned Off

• Description: High temperature detected after the engine has been turned off, which could indicate cooling system issues.
• Possible Causes: Cooling system malfunction, sensor fault.
• Solutions: Inspect and repair cooling system, replace sensors as needed.
• Adsitco Products: Cooling system parts, temperature sensors.

U0 Mercedes Trouble Codes

U0002 – High Speed CAN Communication Bus Performance

• Description: Performance issues detected in the high-speed Controller Area Network (CAN) communication bus, affecting vehicle network communication.
• Possible Causes: Faulty wiring or connectors, defective CAN bus controller.
• Solutions: Inspect and repair CAN bus wiring, replace CAN bus controller if necessary.
• Adsitco Products: CAN bus controllers, wiring repair kits.

U0003 – High Speed CAN Communication Bus (+) Open

• Description: Open circuit detected in the positive line of the high-speed CAN communication bus.
• Possible Causes: Broken wire, loose connector.
• Solutions: Locate and repair the open circuit, ensure secure connections.
• Adsitco Products: Wiring harnesses, connector repair kits.

U0004 – High Speed CAN Communication Bus (+) Low

• Description: Low signal fault in the positive line of the high-speed CAN communication bus.
• Possible Causes: Short circuit to ground, faulty network component.
• Solutions: Identify and repair short circuit, replace faulty components.
• Adsitco Products: Electrical diagnostic tools, replacement network components.

U0005 – High Speed CAN Communication Bus (+) High

• Description: High signal fault in the positive line of the high-speed CAN communication bus.
• Possible Causes: Short circuit to voltage, malfunctioning network component.
• Solutions: Repair short circuit, replace malfunctioning network components.
• Adsitco Products: CAN bus diagnostic equipment, high-quality electrical components.

U0006 – High Speed CAN Communication Bus (-) Open

• Description: Open circuit detected in the negative line of the high-speed CAN communication bus.
• Possible Causes: Disconnected wire, faulty connector.
• Solutions: Repair open circuit, ensure connectors are properly seated.
• Adsitco Products: Electrical wiring and connector repair kits.

U0007 – High Speed CAN Communication Bus (-) Low

• Description: Low signal detected in the negative line of the high-speed CAN communication bus.
• Possible Causes: Electrical short to ground, component failure.
• Solutions: Locate and repair short, replace failed components.
• Adsitco Products: Short circuit detection tools, replacement electrical components.

U0008 – High Speed CAN Communication Bus (-) High

• Description: High signal detected in the negative line of the high-speed CAN communication bus.
• Possible Causes: Short to power in the network, faulty electronic module.
• Solutions: Repair short to power, replace faulty modules.
• Adsitco Products: Diagnostic scanners, electronic control modules.

U0009 – High Speed CAN Communication Bus (-) Shorted to Bus (+)

• Description: Negative and positive lines of the high-speed CAN communication bus are shorted together.
• Possible Causes: Wiring fault, connector issue.
• Solutions: Identify and repair the short between lines, check connectors for damage.
• Adsitco Products: Wiring repair kits, connector replacement parts.

U0010 – Medium Speed CAN Communication Bus

• Description: General fault in the medium-speed CAN communication bus, affecting mid-tier network communication.
• Possible Causes: Network disruption, faulty bus controller or module.
• Solutions: Diagnose and repair network disruption, replace bus controller or modules as needed.
• Adsitco Products: Network communication diagnostic tools, CAN bus controllers.

U0011 – Medium Speed CAN Communication Bus Performance

• Description: Performance issue detected with the medium-speed CAN communication bus.
• Possible Causes: Wiring or connectivity issues, defective network components.
• Solutions: Check and repair wiring, replace defective network components.
• Adsitco Products: Network diagnostic equipment, quality network components.

U0012 – Medium Speed CAN Communication Bus (+) Open

• Description: Open circuit in the positive line of the medium-speed CAN communication bus, potentially disrupting communication between control units.
• Possible Causes: Disconnected or broken wire, corrosion at connectors.
• Solutions: Locate and repair the open circuit, clean or replace corroded connectors.
• Adsitco Products: Wiring harness repair kits, electrical contact cleaner, replacement connectors.

U0013 – Medium Speed CAN Communication Bus (+) Low

• Description: Low voltage detected in the positive line of the medium-speed CAN communication bus, indicating a possible short to ground.
• Possible Causes: Short circuit, faulty electrical component causing voltage drop.
• Solutions: Identify and repair short circuit, replace faulty electrical components.
• Adsitco Products: Circuit testers, electrical components for CAN bus systems.

U0014 – Medium Speed CAN Communication Bus (+) High

• Description: High voltage in the positive line of the medium-speed CAN communication bus, suggesting a short to power.
• Possible Causes: Wiring fault leading to short circuit, malfunctioning control unit.
• Solutions: Repair wiring fault, replace any malfunctioning control units.
• Adsitco Products: High-quality wiring and control units for Mercedes vehicles.

U0015 – Medium Speed CAN Communication Bus (-) Open

• Description: The negative line of the medium-speed CAN communication bus has an open circuit, affecting network reliability.
• Possible Causes: Broken wire, poor connector fitment.
• Solutions: Repair the break in the wire, ensure connectors are properly fitted.
• Adsitco Products: Comprehensive wiring repair solutions, connector kits.

U0016 – Medium Speed CAN Communication Bus (-) Low

• Description: Detected low signal in the negative line of the medium-speed CAN communication bus, indicating potential electrical interference.
• Possible Causes: Electrical interference, short to ground in the wiring.
• Solutions: Locate source of interference or short and remedy, shield cables if necessary.
• Adsitco Products: Shielded wiring, ground fault detection tools.

U0017 – Medium Speed CAN Communication Bus (-) High

• Description: High signal detected in the negative line, possibly due to a short to a voltage source.
• Possible Causes: Short to voltage, defective module affecting bus voltage.
• Solutions: Find and fix the short to voltage, replace defective modules.
• Adsitco Products: Voltage testers, CAN bus compatible modules.

U0018 – Medium Speed CAN Communication Bus (-) Shorted to Bus (+)

• Description: Negative and positive lines of the medium-speed CAN bus are shorted together, potentially halting communication.
• Possible Causes: Wiring damage, connector pin damage.
• Solutions: Inspect wiring and connectors for damage, repair or replace as necessary.
• Adsitco Products: Wiring and connector repair kits, diagnostic tools for network analysis.

U0019 – Low Speed CAN Communication Bus

• Description: General fault in the low-speed CAN communication bus, impacting peripheral device communication.
• Possible Causes: Faulty bus controller, damaged wiring.
• Solutions: Replace faulty bus controllers, repair or replace damaged wiring.
• Adsitco Products: CAN bus controllers, automotive wiring kits.

U0020 – Low Speed CAN Communication Bus Performance

• Description: Performance issues with the low-speed CAN communication bus, affecting slow-speed data transmission.
• Possible Causes: Congested network, poor quality wiring.
• Solutions: Check network for congestion, upgrade wiring quality.
• Adsitco Products: High-quality automotive wiring, CAN bus diagnostic tools.

U0021 – Low Speed CAN Communication Bus (+) Open

• Description: Open circuit detected in the positive line of the low-speed CAN communication bus, potentially disrupting device communication.
• Possible Causes: Severed wire, disconnected connector.
• Solutions: Locate and repair the open circuit, secure all connectors.
• Adsitco Products: Electrical repair kits, secure-fit connectors.

U0022 – Low Speed CAN Communication Bus (+) Low

• Description: Low signal in the positive line of the low-speed CAN bus, indicating a possible short to ground.
• Possible Causes: Short circuit in the wiring, faulty network component pulling the line low.
• Solutions: Identify and fix the short circuit, replace faulty network components.
• Adsitco Products: Short circuit locators, replacement network components for low-speed systems.

U0023 – Low Speed CAN Communication Bus (+) High

• Description: High signal detected on the positive line of the low-speed CAN communication bus, suggesting a short to a voltage source.
• Possible Causes: Wiring short to power, malfunctioning control module.
• Solutions: Locate and repair short to power, replace any malfunctioning modules.
• Adsitco Products: Diagnostic tools for electrical shorts, high-quality control modules.

U0024 – Low Speed CAN Communication Bus (-) Open

• Description: An open circuit in the negative line of the low-speed CAN communication bus, affecting vehicle network stability.
• Possible Causes: Broken or disconnected wire, poor terminal connection.
• Solutions: Repair or reconnect wire, secure or replace terminal connections.
• Adsitco Products: Wiring repair kits, terminal connectors.

U0025 – Low Speed CAN Communication Bus (-) Low

• Description: Low signal detected in the negative line of the low-speed CAN communication bus, potentially due to a short to ground.
• Possible Causes: Short circuit, defective electronic component.
• Solutions: Identify and fix the short circuit, replace defective components.
• Adsitco Products: Electronic component testers, replacement electronic components.

U0026 – Low Speed CAN Communication Bus (-) High

• Description: High signal in the negative line of the low-speed CAN bus, indicating a possible short to voltage.
• Possible Causes: Short to voltage, electrical malfunction.
• Solutions: Repair the short to voltage, address any electrical malfunctions.
• Adsitco Products: Voltage detection tools, comprehensive electrical repair kits.

U0027 – Low Speed CAN Communication Bus (-) Shorted to Bus (+)

• Description: Negative and positive lines of the low-speed CAN bus are shorted, which could halt communication on the bus.
• Possible Causes: Wiring damage, connector faults.
• Solutions: Inspect and repair wiring and connectors.
• Adsitco Products: High-quality wiring and connector repair components.

U0028 to U0072 – Vehicle Communication Bus A to E and Their Performance, Open, Low, High, Shorted Conditions

• Description: These codes represent various conditions (open, low, high, shorted) affecting vehicle communication buses A to E. They indicate specific issues within the vehicle’s multiple communication networks.
• Possible Causes: Varied by code, generally involving wiring faults, short circuits, open circuits, and issues with communication bus performance.
• Solutions: Diagnose the specific bus affected, repair or replace wiring, resolve short or open circuit issues, and replace defective modules affecting bus communication.
• Adsitco Products: A broad range of diagnostic tools for vehicle communication systems, wiring repair kits, and OEM-quality replacement modules.

U0073 – Control Module Communications Bus Off

• Description: Indicates that a control module communication bus is offline, preventing communication between multiple vehicle systems.
• Possible Causes: Faulty control module, major network disruption.
• Solutions: Diagnose and replace faulty control modules, repair network disruptions.
• Adsitco Products: Control modules, network diagnostics and repair tools.

U0100 to U0105 – Lost Communication with ECM/PCM A, TCM, Transfer Case Control Module, Gear Shift Module, Cruise Control Module, Fuel Injector Control Module

• Description: These codes indicate lost communication with critical vehicle control modules, affecting engine management, transmission operation, gear shifting, cruise control, and fuel injection.
• Possible Causes: Faulty modules, disrupted CAN communication, wiring issues.
• Solutions: Check for CAN communication faults, replace faulty modules, repair wiring.
• Adsitco Products: ECM/PCM, TCM, and other control modules, CAN communication repair tools, wiring harnesses.

U0192 to U0198 – Lost Communication with Television, Telephone Control Module, Telematic Control Module

• Description: Communication issues with the vehicle’s entertainment, telephone, and telematics systems, affecting functionality.
• Possible Causes: Disconnected modules, CAN bus issues, wiring faults.
• Solutions: Reconnect or replace modules, diagnose CAN bus, repair wiring.
• Adsitco Products: Entertainment and communication modules, diagnostic tools for entertainment systems, wiring repair components.

U0222, U0235 – Lost Communication with Door Window Motor A, Cruise Control Front Distance Range Sensor

• Description: Indicates communication problems with specific components like door window motors and cruise control sensors, impacting convenience and safety features.
• Possible Causes: Faulty components, wiring or CAN bus issues.
• Solutions: Replace faulty components, diagnose and repair CAN bus and wiring issues.
• Adsitco Products: Replacement door window motors, cruise control sensors, CAN bus diagnostics.

U0301 to U0327 – Software Incompatibility with ECM/PCM, TCM, Transfer Case Control Module, Ride Level Control Module, Vehicle Immobilizer Control Module, Vehicle Security Control Module

• Description: These codes indicate software incompatibility issues between the vehicle’s main control units, potentially affecting performance, security, and functionality.
• Possible Causes: Outdated software, incorrect module programming.
• Solutions: Update module software, reprogram modules as necessary.
• Adsitco Products: Module programming tools, software update services.

U0038 – Vehicle Communication Bus B Performance

• Description: A fault related to the performance of Vehicle Communication Bus B, indicating issues in data transmission or network integrity on this specific bus.
• Possible Causes: Network congestion, damaged bus wiring, or connectors, faulty control modules connected to Bus B.
• Solutions: Diagnose and clear network congestion if applicable, repair or replace damaged bus wiring or connectors, replace faulty control modules as identified.
• Adsitco Products: Network diagnostic scanners, high-quality wiring and connector repair kits, OEM-standard control modules.

Advanced Troubleshooting Tips

When faced with a dashboard full of warning lights, an OBD-II reader becomes an invaluable tool in your diagnostic arsenal. These readers can provide real-time data and specific trouble codes, such as those we’ve discussed, that are crucial for identifying issues with your Mercedes-Benz. However, while these devices are powerful, effective use requires a bit of know-how. Always ensure your reader is compatible with Mercedes-Benz vehicles and up-to-date with the latest software to accurately interpret the codes and data provided.

Despite the sophistication of OBD-II readers, some diagnostic scenarios can be too complex for a standalone tool. In such cases, professional diagnostics with specialized equipment may be necessary. This doesn’t just ensure a precise diagnosis but also saves time and resources in the long run by directly pinpointing the issue without trial and error.

Adsitco’s Role in Your Mercedes-Benz Maintenance

At Adsitco, we understand the intricacies of maintaining the luxury and performance of your Mercedes-Benz. Our extensive range of products is designed to cater specifically to Mercedes-Benz vehicles, ensuring you have access to the right parts for any maintenance or repair task indicated by your OBD-II trouble codes.

Whether you’re dealing with a faulty sensor indicated by a B1234 code or a malfunctioning airbag warning lamp highlighted by a B1476 code, Adsitco has the specific parts you need. Our customers have shared countless success stories, from resolving pesky air conditioning sensor issues with our direct-fit replacements to rejuvenating their vehicle’s performance with high-quality electrical components. These testimonials stand as a testament to how Adsitco parts can solve specific issues, ensuring reliability and peace of mind.

Conclusion

Understanding and utilizing OBD-II codes is essential for the timely and efficient maintenance of your Mercedes-Benz. These codes not only alert you to current issues but also help in preventing future problems by allowing for early detection and resolution. With the support of Adsitco’s comprehensive range of Mercedes-Benz parts and accessories, addressing these issues becomes straightforward, ensuring your vehicle continues to deliver the performance and luxury you expect.

We encourage you to explore our extensive product range tailored for your Mercedes-Benz needs. Whether you’re tackling a DIY repair or preparing for professional service, Adsitco is here to support every step of the way.

Additional Resources

For further reading on diagnostics and maintenance, take a look through our Manuals category. Here, you’ll find both paper and digital copies of various owner’s manuals, engine service manuals, and more to help you better understand and maintain the inner-workings of your vehicle. Trust Adsitco for all your Mercedes-Benz parts needs, and experience the difference quality and expertise can make in your vehicle maintenance.