**Mercedes Codes List**: Your Comprehensive Guide to Mercedes-Benz Diagnostics
Mercedes Codes List is your go-to resource for understanding Mercedes-Benz diagnostic trouble codes. CARDIAGTECH.NET is dedicated to providing you with an exhaustive list of Mercedes fault codes, empowering you to diagnose and resolve issues efficiently. With our help, you can enhance your understanding of Mercedes diagnostics and ensure your vehicle runs smoothly.
1. Understanding Mercedes-Benz Fault Codes
What exactly are Mercedes fault codes? They are diagnostic trouble codes (DTCs) generated by your Mercedes-Benz’s onboard computer to signal malfunctions.
Diagnostic Trouble Codes (DTCs), also known as fault codes, are generated when a Mercedes-Benz onboard computer detects a malfunction in one of its many systems. These codes are essential for diagnosing and repairing issues, as they pinpoint the source of the problem. According to a study by the National Institute for Automotive Service Excellence (ASE), understanding these codes can reduce diagnostic time by up to 40%. These codes trigger dash lights (e.g., Check Engine, Brake, Temperature) to alert the driver. For example, a P0400 code indicates an issue with the Exhaust Gas Recirculation system, while a B1000 code suggests a problem with the Headlamp Range Adjustment. Newer Mercedes models display error messages, prompting inspection.
1.1 What is a Fault Code?
A fault code, also known as a Diagnostic Trouble Code (DTC), is a system code error that informs your Mercedes-Benz about a malfunctioning component. Fault codes are alphanumeric codes that correspond to specific issues within the vehicle’s systems. They are essential for technicians to accurately diagnose and repair problems.
1.2 How Fault Codes Work
When a fault code is triggered, it activates a warning light on your dashboard. Modern Mercedes models display error messages, indicating the need for inspection. When a fault is detected, the car’s computer stores a specific code. These codes can be read using diagnostic tools, helping technicians identify the problem area. According to a report by the Society of Automotive Engineers (SAE), modern vehicles can generate thousands of unique DTCs, highlighting the complexity of automotive diagnostics.
1.3 The Importance of Addressing Fault Codes Promptly
Ignoring fault codes can lead to more significant and costly repairs. Addressing them promptly ensures your Mercedes-Benz remains in optimal condition, providing a safe and reliable driving experience. Quick diagnosis and repair can prevent further damage and maintain the vehicle’s performance. A study by AAA found that neglecting minor car repairs can lead to major issues, increasing repair costs by as much as tenfold.
2. Common Mercedes Error Messages Explained
What are the common Mercedes error messages and what do they mean? We explore frequently encountered fault codes and their potential causes.
Common Mercedes error messages often relate to engine, transmission, and sensor issues. For instance, P261F71 may indicate a coolant intrusion in the vacuum system of a Mercedes Sprinter Van, while P126A00 could point to an oil cooler leak in the OM642 engine. Regular maintenance and timely repairs can prevent these issues from escalating. A report by J.D. Power indicates that vehicles with regular maintenance have fewer problems and higher resale values. CARDIAGTECH.NET offers diagnostic tools to help identify these issues early.
2.1 Mercedes Fault Code: P261F71
2.1.1 Meaning
The output for the circulation pump has a malfunction, indicating that the actuator is blocked.
2.1.2 Known Problem
This issue is commonly observed in Mercedes Sprinter Vans.
2.1.3 Likely Causes
Coolant intrusion into the vacuum system, often due to a faulty water pump.
2.1.4 What’s Happening?
In the OM651 4-cylinder diesel engine, the coolant water pump is vacuum actuated. A failure in the internal seal of the water pump allows coolant (antifreeze) to enter the vacuum system. The vacuum system’s strength pulls coolant deeper, causing significant damage.
2.1.5 Possible Symptoms
- Check Engine Light
- Reduced or no acceleration
- Coolant leak
- Brake pedal pressure issues
- Engine overheating
2.1.6 Parts That Could Need Replacement
- Water Pump
- Coolant
- Seals
- Tubes
- Hoses
- Vacuum Actuators
- Vacuum Pump
2.1.7 Systems Affected
- Engine
- Cooling System
- Vacuum System
- Turbocharging
- Brake System
2.1.8 Severity
This issue can be severe if left unaddressed. Repair typically requires a master-level technician and is not suitable for DIY attempts.
2.2 Mercedes Fault Code: P126A00
2.2.1 Meaning
Indicates that the intake port shutoff actuator is faulty.
2.2.2 Known Problem
Commonly seen in Mercedes Sprinter Vans.
2.2.3 Likely Causes
Failure of components such as intake manifolds or the intake manifold actuator motor.
2.2.4 What’s Happening?
Over time, the intake manifolds can become clogged with EGR soot, causing the intake swirl flaps to stick. This binding affects the motor, triggering the check engine light and potential loss of acceleration.
2.2.5 Possible Symptoms
- Check Engine Light
- Significant loss of acceleration
2.2.6 Parts That Could Need Replacement
- Intake Manifolds
- Intake Manifold Actuator Motor
2.2.7 Systems Affected
- Engine
2.2.8 Severity
Severe if not repaired. Requires a master-level technician; not recommended for DIY.
3. Comprehensive Mercedes Fault Code Lists
Need a detailed breakdown of Mercedes fault codes? CARDIAGTECH.NET offers an extensive list, categorized for easy navigation.
Our comprehensive Mercedes fault code lists provide detailed information to help diagnose and resolve issues efficiently. The lists are categorized by system (e.g., P0400 for emissions, P0500 for speed sensors) to make navigation easier. Regular updates ensure the information is current. According to a survey by Consumer Reports, having access to accurate diagnostic information significantly improves repair outcomes. CARDIAGTECH.NET’s tools and resources ensure you have the data you need.
3.1 P0400 Mercedes Fault Codes Meaning
What do P0400 series codes signify? They typically relate to issues within the exhaust system.
P0400 series codes usually indicate problems with the exhaust system, such as issues with the Exhaust Gas Recirculation (EGR) system, exhaust pressure sensors, and related components. Addressing these issues can improve engine performance and reduce emissions. According to the EPA, maintaining the exhaust system can improve fuel efficiency by up to 4%. CARDIAGTECH.NET provides the tools needed to diagnose and fix these problems.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P0466 | Purge Flow Sensor Circuit Range/Performance |
| P0467 | Purge Flow Sensor Circuit Low Input |
| P0468 | Purge Flow Sensor Circuit High Input |
| P0469 | Purge Flow Sensor Circuit Intermittent |
| P0470 | Exhaust Pressure Sensor Malfunction |
| P0471 | Exhaust Pressure Sensor Range/Performance |
| P0472 | Exhaust Pressure Sensor Low |
| P0473 | Exhaust Pressure Sensor High |
| P0474 | Exhaust Pressure Sensor Intermittent |
| P0475 | Exhaust Pressure Control Valve Malfunction |
| P0476 | Exhaust Pressure Control Valve Range/Performance |
| P0477 | Exhaust Pressure Control Valve Low |
| P0478 | Exhaust Pressure Control Valve High |
| P0479 | Exhaust Pressure Control Valve Intermittent |
| P0480 | Cooling Fan 1 Control Circuit Malfunction |
| P0481 | Cooling Fan 2 Control Circuit Malfunction |
| P0482 | Cooling Fan 3 Control Circuit Malfunction |
| P0483 | Cooling Fan Rationality Check Malfunction |
| P0484 | Cooling Fan Circuit Over Current |
| P0485 | Cooling Fan Power/Ground Circuit Malfunction |
3.2 P0500 Mercedes Fault Codes Meaning
What do P0500 series codes signify? These codes often relate to vehicle speed sensor malfunctions.
P0500 series codes commonly relate to issues with the vehicle speed sensor, idle control system, and related components. Addressing these issues ensures proper functioning of the speedometer, cruise control, and other critical systems. According to the National Highway Traffic Safety Administration (NHTSA), accurate speed readings are essential for vehicle safety. CARDIAGTECH.NET offers tools to diagnose and resolve these issues.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P0500 | Vehicle Speed Sensor Malfunction |
| P0501 | Vehicle Speed Sensor Range/Performance |
| P0502 | Vehicle Speed Sensor Low Input |
| P0503 | Vehicle Speed Sensor Intermittent/Erratic/High |
| P0505 | Idle Control System Malfunction |
| P0506 | Idle Control System RPM Lower Than Expected |
| P0507 | Idle Control System RPM Higher Than Expected |
| P0510 | Closed Throttle Position Switch Malfunction |
| P0520 | Engine Oil Pressure Sensor/Switch Circuit Malfunction |
| P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance |
| P0522 | Engine Oil Pressure Sensor/Switch Circuit Low Voltage |
| P0523 | Engine Oil Pressure Sensor/Switch Circuit High Voltage |
| P0530 | A/C Refrigerant Pressure Sensor Circuit Malfunction |
| P0531 | A/C Refrigerant Pressure Sensor Circuit Range/Performance |
| P0532 | A/C Refrigerant Pressure Sensor Circuit Low Input |
| P0533 | A/C Refrigerant Pressure Sensor Circuit High Input |
| P0534 | Air Conditioner Refrigerant Charge Loss |
| P0550 | Power Steering Pressure Sensor Circuit Malfunction |
| P0551 | Power Steering Pressure Sensor Circuit Range/Performance |
| P0552 | Power Steering Pressure Sensor Circuit Low Input |
| P0553 | Power Steering Pressure Sensor Circuit High Input |
| P0554 | Power Steering Pressure Sensor Circuit Intermittent |
| P0560 | System Voltage Malfunction |
| P0561 | System Voltage Unstable |
| P0562 | System Voltage Low |
| P0563 | System Voltage High |
| P0565 | Cruise Control On Signal Malfunction |
| P0566 | Cruise Control Off Signal Malfunction |
| P0567 | Cruise Control Resume Signal Malfunction |
| P0568 | Cruise Control Set Signal Malfunction |
| P0569 | Cruise Control Coast Signal Malfunction |
| P0570 | Cruise Control Accel Signal Malfunction |
| P0571 | Cruise Control/Brake Switch A Circuit Malfunction |
| P0572 | Cruise Control/Brake Switch A Circuit Low |
| P0573 | Cruise Control/Brake Switch A Circuit High |
| P0574 | Cruise Control Related Malfunction |
| P0575 | Cruise Control Related Malfunction |
| P0576 | Cruise Control Related Malfunction |
| P0576 | Cruise Control Related Malfunction |
| P0578 | Cruise Control Related Malfunction |
| P0579 | Cruise Control Related Malfunction |
| P0580 | Cruise Control Related Malfunction |
3.3 P0600 Mercedes Fault Codes Meaning
What do P0600 series codes signify? They typically indicate issues with the control module.
P0600 series codes typically indicate issues with the control module, including communication errors, memory malfunctions, and processor faults. Addressing these problems is crucial for maintaining the vehicle’s overall performance and reliability. According to a study by the American Society for Quality (ASQ), reliable control modules are essential for vehicle safety and efficiency. CARDIAGTECH.NET provides the diagnostic tools to identify and address these issues.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P0600 | Serial Communication Link Malfunction |
| P0601 | Internal Control Module Memory Check Sum Error |
| P0602 | Control Module Programming Error |
| P0603 | Internal Control Module Keep Alive Memory (KAM) Error |
| P0604 | Internal Control Module Random Access Memory (RAM) Error |
| P0605 | Internal Control Module Read Only Memory (ROM) Error |
| P0606 | PCM Processor Fault |
| P0608 | Control Module VSS Output “A” Malfunction |
| P0609 | Control Module VSS Output “B” Malfunction |
| P0620 | Generator Control Circuit Malfunction |
| P0621 | Generator Lamp “L” Control Circuit Malfunction |
| P0622 | Generator Field “F” Control Circuit Malfunction |
| P0650 | Malfunction Indicator Lamp (MIL) Control Circuit Malfunction |
| P0654 | Engine RPM Output Circuit Malfunction |
| P0655 | Engine Hot Lamp Output Control Circuit Malfunction |
| P0656 | Fuel Level Output Circuit Malfunction |
3.4 P0700 Mercedes Fault Codes Meaning
What do P0700 series codes signify? They typically indicate issues with the transmission.
P0700 series codes typically indicate issues with the transmission control system, including malfunctions with sensors, solenoids, and gear ratios. Addressing these problems is crucial for maintaining smooth and efficient gear changes. According to a study by the Transmission Repair Association (TRA), addressing transmission issues promptly can prevent costly repairs. CARDIAGTECH.NET offers diagnostic tools to help identify and fix these problems.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P0700 | Transmission Control System Malfunction |
| P0701 | Transmission Control System Range/Performance |
| P0702 | Transmission Control System Electrical |
| P0703 | Torque Converter/Brake Switch B Circuit Malfunction |
| P0704 | Clutch Switch Input Circuit Malfunction |
| P0705 | Transmission Range Sensor Circuit malfunction (PRNDL Input) |
| P0706 | Transmission Range Sensor Circuit Range/Performance |
| P0707 | Transmission Range Sensor Circuit Low Input |
| P0708 | Transmission Range Sensor Circuit High Input |
| P0709 | Transmission Range Sensor Circuit Intermittent |
| P0710 | Transmission Fluid Temperature Sensor Circuit Malfunction |
| P0711 | Transmission Fluid Temperature Sensor Circuit Range/Performance |
| P0712 | Transmission Fluid Temperature Sensor Circuit Low Input |
| P0713 | Transmission Fluid Temperature Sensor Circuit High Input |
| P0714 | Transmission Fluid Temperature Sensor Circuit Intermittent |
| P0715 | Input/Turbine Speed Sensor Circuit Malfunction |
| P0716 | Input/Turbine Speed Sensor Circuit Range/Performance |
| P0717 | Input/Turbine Speed Sensor Circuit No Signal |
| P0718 | Input/Turbine Speed Sensor Circuit Intermittent |
| P0719 | Torque Converter/Brake Switch B Circuit Low |
| P0720 | Output Speed Sensor Circuit Malfunction |
| P0721 | Output Speed Sensor Range/Performance |
| P0722 | Output Speed Sensor No Signal |
| P0723 | Output Speed Sensor Intermittent |
| P0724 | Torque Converter/Brake Switch B Circuit High |
| P0725 | Engine Speed input Circuit Malfunction |
| P0726 | Engine Speed Input Circuit Range/Performance |
| P0727 | Engine Speed Input Circuit No Signal |
| P0728 | Engine Speed Input Circuit Intermittent |
| P0730 | Incorrect Gear Ratio |
| P0731 | Gear 1 Incorrect Ratio |
| P0732 | Gear 2 Incorrect Ratio |
| P0733 | Gear 3 Incorrect Ratio |
| P0734 | Gear 4 Incorrect Ratio |
| P0735 | Gear 5 Incorrect Ratio |
| P0736 | Reverse Incorrect Gear Ratio |
| P0740 | Torque Converter Clutch Circuit Malfuction |
| P0741 | Torque Converter Clutch Circuit Performance or Stuck Off |
| P0742 | Torque Converter Clutch Circuit Stuck On |
| P0743 | Torque Converter Clutch Circuit Electrical |
| P0744 | Torque Converter Clutch Circuit Intermittent |
| P0745 | Pressure Control Solenoid Malfunction |
| P0746 | Pressure Control Solenoid Performance or Stuck Off |
| P0747 | Pressure Control Solenoid Stuck On |
| P0748 | Pressure Control Solenoid Electrical |
| P0749 | Pressure Control Solenoid Intermittent |
| P0750 | Shift Solenoid A Malfunction |
| P0751 | Shift Solenoid A Performance or Stuck Off |
| P0752 | Shift Solenoid A Stuck On |
| P0753 | Shift Solenoid A Electrical |
| P0754 | Shift Solenoid A Intermittent |
| P0755 | Shift Solenoid B Malfunction |
| P0756 | Shift Solenoid B Performance or Stuck Off |
| P0757 | Shift Solenoid B Stuck On |
| P0758 | Shift Solenoid B Electrical |
| P0759 | Shift Solenoid B Intermittent |
| P0760 | Shift Solenoid C Malfunction |
| P0761 | Shift Solenoid C Performance or Stuck Off |
| P0762 | Shift Solenoid C Stuck On |
| P0763 | Shift Solenoid C Electrical |
| P0764 | Shift Solenoid C Intermittent |
| P0765 | Shift Solenoid D Malfunction |
| P0766 | Shift Solenoid D Performance or Stuck Off |
| P0767 | Shift Solenoid D Stuck On |
| P0768 | Shift Solenoid D Electrical |
| P0769 | Shift Solenoid D Intermittent |
| P0770 | Shift Solenoid E Malfunction |
| P0771 | Shift Solenoid E Performance or Stuck Off |
| P0772 | Shift Solenoid E Stuck On |
| P0773 | Shift Solenoid E Electrical |
| P0774 | Shift Solenoid E Intermittent |
| P0780 | Shift Malfunction |
| P0781 | 1-2 Shift Malfunction |
| P0782 | 2-3 Shift Malfunction |
| P0783 | 3-4 Shift Malfunction |
| P0784 | 4-5 Shift Malfunction |
| P0785 | Shift/Timing Solenoid Malfunction |
| P0786 | Shift/Timing Solenoid Range/Performance |
| P0787 | Shift/Timing Solenoid Low |
| P0788 | Shift/Timing Solenoid High |
| P0789 | Shift/Timing Solenoid Intermittent |
| P0790 | Normal/Performance Switch Circuit Malfunction |
3.5 P0800 Mercedes Fault Codes Meaning
What do P0800 series codes signify? They typically relate to issues with transmission control.
P0800 series codes relate to transmission control issues, including reverse inhibit control, clutch position sensor malfunctions, and 4-wheel drive switch problems. Addressing these ensures proper vehicle operation and safety. According to a report by the American Automobile Association (AAA), malfunctions in transmission control systems can significantly impact vehicle safety. CARDIAGTECH.NET provides tools for diagnosing and repairing these issues.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P0801 | Reverse Inhibit Control Circuit Malfunction |
| P0803 | 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction |
| P0804 | 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction |
| P0805 | Clutch Position Sensor Circuit Malfunction |
| P0806 | Clutch Position Sensor Circuit Range/Performance |
| P0807 | Clutch Position Sensor Circuit Low |
| P0808 | Clutch Position Sensor Circuit High |
| P0809 | Clutch Position Sensor Circuit Intermittent Ckt |
| P0810 | Clutch Position Control Malfunction |
| P0811 | Clutch Slippage Excessive |
| P0812 | Reverse Input Circuit Malfunction |
| P0813 | Reverse Output Circuit Malfunction |
| P0814 | Trans Range Display Circuit Malfunction |
| P0815 | Upshift Switch Circuit Malfunction |
| P0816 | Downshift Switch Circuit Malfunction |
| P0817 | Starter Disable Circuit |
| P0818 | Driveline Disconn. Switch Input |
| P0820 | Gear Lever X-Y Sensor Circuit |
| P0821 | Gear Lever X Sensor Circuit |
| P0822 | Gear Lever Y Sensor Circuit |
| P0823 | Gear Lever X Sensor Circuit Intermittent Ckt |
| P0824 | Gear Lever Y Sensor Circuit Intermittent Ckt |
| P0830 | Clutch Position Switch A Circuit Malfunction |
| P0831 | Clutch Position Switch A Circuit Low |
| P0832 | Clutch Position Switch A Circuit High |
| P0833 | Clutch Position Switch B Circuit Malfunction |
| P0834 | Clutch Position Switch B Circuit Low |
| P0835 | Clutch Position Switch B Circuit High |
| P0836 | 4 Wheel Drive Switch Circuit Malfunction |
| P0837 | 4 Wheel Drive Switch CKT Range/Perf |
| P0838 | 4 Wheel Drive Switch Circuit Low |
| P0839 | 4 Wheel Drive Switch Circuit High |
| P0840 | Trans Fluid Press Sensor/Switch A Circuit Malfunction |
| P0841 | Trans Fluid Press Sensor/Switch A CKT Range/Perf |
| P0842 | Trans Fluid Press Sensor/Switch A Circuit Low |
| P0843 | Trans Fluid Press Sensor/Switch A Circuit High |
| P0844 | Trans Fluid Press Sensor/Switch A CKT Intermittent |
| P0845 | Trans Fluid Press Sensor/Switch B Circuit Malfunction |
| P0846 | Trans Fluid Press Sensor/Switch B CKT Range/Perf |
| P0847 | Trans Fluid Press Sensor/Switch B Circuit Low |
| P0848 | Trans Fluid Press Sensor/Switch B Circuit High |
| P0849 | Trans Fluid Press Sensor/Switch B CKT Intermittent |
3.6 P1000-P2000 Fault Codes Meaning
What do P1000-P2000 series codes signify? They cover a range of electronic and engine-related issues.
P1000-P2000 codes cover a wide array of electronic and engine-related issues, including gear selector module defects, knock control problems, and NOx trap efficiency issues. Addressing these problems is essential for maintaining optimal vehicle performance. According to a study by the Environmental Protection Agency (EPA), proper management of NOx emissions is crucial for environmental health. CARDIAGTECH.NET provides diagnostic tools for identifying and resolving these problems.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| P1000 | Electronic Gear Selector Module: Defective N15/5 |
| P1228 | Yet unknown code on 1997 C 220 CDI |
| P1386 | Knock control |
| P1570 | Intermittant No-Start Immobiliser Module |
| P1747 | Electronic Gear Selector Module: Defective Interaction of CAN with control unit A1(instrument cluster) |
| P1750 | Electronic Gear Selector Module: Very low control unit supply voltage |
| P1832 | Electronic Gear Selector Module: SHORT in circuit N15/5 output stage |
| P1910 | Electronic Gear Selector Module: Control Unit over voltage |
| P1912 | Electronic Gear Selector Module: Weak touch push button voltage |
| 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) |
| 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) |
| P2080 | Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1) |
| P2081 | Exhaust Gas Temperature Sensor Circuit intermittant (Bank 1 Sensor 1) |
| P2100 | Throttle Actuator Control Motor Circuit/Open |
| P2101 | Throttle Actuator Control Motor Circuit Range/Performance |
| P2208 | Transmission: The speed of Y3/6n2 to Y3/6n3 is excessive |
3.7 Mercedes Body (B####) Fault Codes
What do Mercedes body (B####) fault codes signify? They relate to various issues within the vehicle’s body systems.
Mercedes body (B####) fault codes relate to various issues within the vehicle’s body systems, including lighting, air conditioning, seat adjustments, and airbag systems. Addressing these issues enhances comfort and safety. According to the Insurance Institute for Highway Safety (IIHS), properly functioning safety systems are critical for minimizing injury in accidents. CARDIAGTECH.NET offers diagnostic tools to help identify and resolve these problems.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| B1000 | HRA Headlamp range adjustment: Supply voltage of the control unit is too low (undervoltage) |
| B1004 | LCP Lower Control Panel: Control unit does not match vehicle type |
| B1056 | Automatic Air Conditioning: Problem in CAN communication with control unit DCM-RL |
| B1201 | Electric seat adjustment front left: Hall sensor front height M27m3 |
| B1213 | If seat memory installed: ext right rearview mirror voltage faulty |
| B1214 | If seat memory installed: ext right rearview mirror voltage faulty |
| B1226 | In-car temperature sensor (B10/4) |
| B1227 | Outside temperature indicator temp sensor (014) |
| B1128 | Heater core temperature (B10/1) |
| B1229 | Heater core temperature (B10/1) |
| B1230 | Evaporator temperature sensor (B10/6) |
| B1231 | ECT sensor (B11/4) |
| B1232 | Refrigerant pressure sensor (B12) |
| B1233 | Refrigerant temperature sensor (B12/1) |
| B1234 | Sun sensor (B32) |
| B1235 | Emissions sensor (B31) |
| B1241 | Refrigerant Fill |
| B1246 | PTS Parktronic: A42b1 (left outer sensor, front bumper) The plug connection has poor contact or is loose, or the sensor or cable is faulty |
| B1310 | Left/Window airbag sensor is defective |
| B1315 | Problem in Front passenger child seat recognition |
| B1416 | Coolant circulation pump (M13) |
| B1417 | Duovalve (Y21y1), left |
| B1418 | Duovalve (Y21y2), right |
| B1419 | Electromagnetic clutch (A9k1) |
| B1420 | Idle speed increase |
| B1421 | Pulse module (N05) |
| B1422 | Series interface (K1) connection to instrument cluster (A1) |
| B1423 | Switchover valve block (Y11) |
| B1424 | Activated charcoal filler actuator (A32m2) open |
| B1425 | Activated charcoal filler actuator (A32m2) closed |
| B1432 | Non-USA DTC |
| B1459 | Series interface (K2) connection to instrument cluster (A1) |
| B1462 | Wide open throttle (WOT) position signal diesel engines |
| B1476 | Airbag malfunction indicator and warning lamp is defective |
| B1481 | HRA: Part E2m1 (Right headlamp range adjustment motor) has short to ground |
| B1489 | HRA: Part E2m1 (Right headlamp range adjustment motor) has open or short to positive |
| B1492 | HRA: Part E1m1 (Left headlamp range adjustement motor) has short to positive/td> |
| B1617 | Part E19/1 (Left license plate lamp) is defective |
| B1618 | Part E19/2 (Right license plate lamp) is defective |
| B1628 | Part E2e5 (Turn signal lamp) in module E2 (Right front headlamp unit) is defective. |
| B1703 | Intermittant No Start in AAM Immobiliser Module |
| B1729 | PSE Pneumatic system doorlock Control Module A37 |
| B1736 | Navigation system’s CD Player: Check General CD, Check CD data block, Flimsy CD data |
| B1768 | Faulty open data flap limit switch (0025) Front flap |
| B1773 | HRA: Zero position programming has not yet been carried out or is not possible |
| B1850 | Electric seat adjustment front right: CAN communication interrupted with DCMC1000 Traction System Control Module |
3.8 Mercedes C-Level Fault Codes
What do Mercedes C-Level fault codes signify? These codes typically relate to chassis and brake systems.
Mercedes C-Level fault codes relate to chassis and brake systems, including ABS, ESP, and AIRmatic suspension. Addressing these ensures vehicle stability and safety. According to the National Safety Council (NSC), properly functioning brake and stability systems are essential for preventing accidents. CARDIAGTECH.NET offers diagnostic tools to identify and resolve these problems.
| Mercedes Fault Code | Fault Code Meaning |
|---|---|
| C1010 | Battery Voltage Low |
| C1011 | ASR/ETS/ESP Circuit Open or Shorted |
| C1012 | Battery Voltage High |
| C1020 | CAN Communication Fault |
| C1021 | CAN Communication With EA/CC/ISC Control Module Interrupted |
