Mercedes DTC Code List: Your Ultimate Guide to Diagnosis and Repair
Mercedes-Benz vehicles are renowned for their advanced technology and sophisticated engineering. However, like all vehicles, they can experience issues that trigger diagnostic trouble codes (DTCs). Understanding the Mercedes Dtc Code List is crucial for accurately diagnosing problems and performing effective repairs. This comprehensive guide will provide you with everything you need to know about Mercedes DTC codes, including common codes, their meanings, potential causes, and troubleshooting tips.
If you are unsure about how to repair, diagnose, or program mercedes dtc code list errors, contact VCCarTool via WhatsApp: +1 (901) 414 – 1927 for assistance to avoid causing more serious errors.
Table of Contents
- What is a Mercedes DTC Code?
- Why is Understanding Mercedes DTC Codes Important?
- Common Mercedes DTC Code Categories
- Mercedes Fault Code: P261F71 – Detailed Analysis
- Mercedes Fault Code: P126A00 – OM642 Engine Oil Cooler Leak
- Comprehensive Mercedes Dtc Code Lists
- 6.1. P0400 Series
- 6.2. P0500 Series
- 6.3. P0600 Series
- 6.4. P0700 Series
- 6.5. P0800 Series
- 6.6. P1000-P2000 Series
- 6.7. Body Fault Codes (B-Codes)
- 6.8. Chassis Fault Codes (C-Codes)
- 6.9. Network Communication Fault Codes (U-Codes)
- Tools and Equipment for Reading Mercedes DTC Codes
- Step-by-Step Guide to Diagnosing Mercedes DTC Codes
- Advanced Troubleshooting Techniques for Mercedes DTC Codes
- When to Seek Professional Help for Mercedes DTC Codes
- Preventive Maintenance to Avoid Mercedes DTC Codes
- The Future of Mercedes DTC Codes and Diagnostics
- Frequently Asked Questions (FAQ) about Mercedes DTC Codes
Mercedes-Benz vehicles employ a complex system of onboard computers and sensors to monitor various functions. When a problem is detected, a Diagnostic Trouble Code (DTC) is generated, which is why having access to a detailed mercedes dtc code list is essential. This guide will help you understand these codes and take the necessary steps to resolve issues, potentially saving you time and money. Let’s explore the intricacies of Mercedes DTC codes together.
1. What is a Mercedes DTC Code?
A Mercedes DTC (Diagnostic Trouble Code) is a code generated by the vehicle’s onboard computer system when it detects a malfunction or anomaly in one of its many systems. These codes are designed to help technicians and owners identify the source of the problem and perform the necessary repairs. DTCs can relate to the engine, transmission, ABS, airbag system, or any other computerized system in the vehicle. Essentially, DTCs are your Mercedes’ way of telling you something isn’t working as expected.
2. Why is Understanding Mercedes DTC Codes Important?
Understanding mercedes dtc code list is critical for several reasons:
- Accurate Diagnosis: DTCs provide specific information about the problem, helping to pinpoint the exact system or component that is malfunctioning.
- Cost Savings: By accurately diagnosing the issue, you can avoid unnecessary repairs and replacements, saving both time and money.
- Preventive Maintenance: DTCs can sometimes indicate minor issues that, if left unaddressed, could lead to more significant and costly problems down the road.
- Informed Decision-Making: Knowing the DTC allows you to discuss the issue intelligently with a mechanic and make informed decisions about the necessary repairs.
- DIY Repairs: For those with mechanical skills, understanding DTCs can enable them to perform some repairs themselves, further reducing costs.
3. Common Mercedes DTC Code Categories
Mercedes DTCs are categorized into several main groups, each relating to a specific area of the vehicle’s operation:
- P-Codes (Powertrain): These codes relate to the engine, transmission, and related components. They are the most common type of DTC.
- B-Codes (Body): Body codes pertain to systems like airbags, central locking, power windows, and other comfort and convenience features.
- C-Codes (Chassis): Chassis codes relate to systems such as ABS (Anti-lock Braking System), ESP (Electronic Stability Program), and suspension.
- U-Codes (Network Communication): These codes indicate issues with the communication network between the various control modules in the vehicle.
Understanding which category a code falls into helps narrow down the potential causes and focus diagnostic efforts.
4. Mercedes Fault Code: P261F71 – Detailed Analysis
P261F71 is a specific Mercedes fault code that indicates a malfunction in the circulation pump output. Here’s a breakdown:
- Fault Code Meaning: The output for the circulation pump has a malfunction. The actuator is blocked.
- Known Problem Of: Mercedes Sprinter Vans
- Likely Causes: Coolant intrusion into the vacuum system via the water pump.
- What’s Happening?: On model OM651 4 Cylinder Diesel Engine, the coolant water pump is vacuum actuated. The internal seal in the water pump gives way and allows coolant (antifreeze) to enter the vacuum system. The vacuum system operates with the engine running. As the vehicle is driven, the vacuum is so powerful it pulls coolant (antifreeze) deeper into the vacuum system, causing havoc on the entire vacuum system. According to a study by Mercedes-Benz Engineering, this issue is more prevalent in vehicles with over 80,000 miles due to wear and tear on the pump seals.
- Possible Symptoms You May Experience:
- Check Engine Light
- Little to no acceleration
- Coolant leak
- Brake Pedal Pressure issues
- Engine overheating
- Parts That Could Need Replacement:
- Water Pump
- Coolant
- Seals
- Tubes
- Hoses
- Vacuum Actuators
- Vacuum Pump
- System(s) Affected:
- Engine
- Cooling System
- Vacuum System
- Turbocharging
- Brake System
- Severity: Can be very severe if left unfixed. Repair requires a MASTER LEVEL Technician and is not something for the DIYer.
If you encounter this code, it’s essential to address it promptly to avoid further damage to the engine and related systems.
If you are unsure about how to repair, diagnose, or program mercedes dtc code list errors, contact VCCarTool via WhatsApp: +1 (901) 414 – 1927 for assistance to avoid causing more serious errors.
5. Mercedes Fault Code: P126A00 – OM642 Engine Oil Cooler Leak
Another common Mercedes fault code is P126A00, which relates to an oil cooler leak in the OM642 engine. Here’s a detailed look:
- Fault Code Meaning: Intake Port Shutoff Actuator is faulty.
- Known Problem Of: Mercedes Sprinter Vans
- Likely Causes: Failure of component: intake manifolds, or the intake manifold actuator motor.
- What’s Happening?: Over time (several thousand miles) 50-100k miles, the inside of the intake manifolds get clogged with EGR soot buildup, causing the intake swirl flaps to stick. The sticking or binding of these flaps then binds the motor, which causes the check engine light and/or a severe loss of acceleration.
- Possible Symptoms You May Experience: (Details needed – consult with a technician)
- Parts That Could Need Replacement: (Details needed – consult with a technician)
- System(s) Affected:
- Engine
- Severity: Can be very severe if left unfixed. Repair requires a MASTER LEVEL Technician and is not something for the DIYer.
Addressing this issue quickly can prevent significant engine damage and maintain optimal performance.
6. Comprehensive Mercedes DTC Code Lists
Below is a comprehensive mercedes dtc code list, categorized for easier navigation.
6.1. P0400 Series
These codes relate to the exhaust gas recirculation (EGR) system and other emissions-related components.
| 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 |
6.2. P0500 Series
This series includes codes related to vehicle speed, idle control, and other sensor malfunctions.
| 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 |
6.3. P0600 Series
These codes often indicate internal control module errors and communication 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 |
6.4. P0700 Series
This series pertains to transmission-related issues, including shift solenoid malfunctions and incorrect gear ratios.
| 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 |
6.5. P0800 Series
Codes in this series often relate to clutch position, gear lever issues, and transmission fluid pressure.
| 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 |
6.6. P1000-P2000 Series
This range includes a variety of codes related to specific Mercedes systems, such as gear selection, knock control, and exhaust gas temperature.
| 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 |
6.7. Body Fault Codes (B-Codes)
B-Codes indicate problems with systems like airbags, lighting, and climate control.
| 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 |
6.8. Chassis Fault Codes (C-Codes)
C-Codes relate to systems like ABS, traction control, and suspension.
| 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 |
| C1024 | CAN Communication With Engine Control Module Interrupted |
| C1025 | CAN Communication BAS communication with ESP control unit faulty |
| C1100 | Left Front Axle VSS Circuit Fault |
| C1101 | Right Front Axle VSS Circuit Fault |
| C1102 | ETS/ASR, ABS Left Axle VSS Circuit Fault |
| C1103 | Right Rear Axle VSS Circuit Fault |
| C1121 | AIRmatic: fault in component B22/3 (level sensor) |
| C1122 | AIRmatic: fault in component B22/4 (level sensor) |
| C1123 | AIRmatic: fault in component B22/6 (level sensor) |
| C1132 | AIRmatic: fault in component B22/8 (level sensor) |
| C1133 | AIRmatic: fault in component B22/ |