**Decoding Mercedes Fault Codes: Your Comprehensive Guide**
Mercedes Fault Codes are diagnostic trouble codes (DTCs) that your car’s onboard computer generates to indicate a malfunctioning system. Understanding these codes is crucial for diagnosing and repairing your vehicle effectively. This comprehensive guide will help you decipher Mercedes fault codes and get your car back on the road. CARDIAGTECH.NET offers cutting-edge diagnostic tools to help you quickly identify and address these issues, ensuring your Mercedes performs at its best. Use our advanced tools for effective auto repair and maintenance.
1. Understanding Mercedes Fault Codes
What exactly are Mercedes fault codes, and why are they important?
Mercedes fault codes, also known as Diagnostic Trouble Codes (DTCs), are codes generated by your Mercedes’ onboard computer to indicate malfunctions in various systems. These codes are essential for diagnosing issues, as they pinpoint the source of the problem, saving time and resources. According to a study by the National Institute for Automotive Service Excellence (ASE), accurate diagnostics can reduce repair time by up to 40%. Ignoring these codes can lead to more severe damage and costly repairs. CARDIAGTECH.NET provides state-of-the-art diagnostic tools that allow you to quickly and accurately read these codes, ensuring your Mercedes receives the attention it needs.
1.1 Why Mercedes Fault Codes Matter
Why should you pay attention to Mercedes fault codes?
Mercedes fault codes provide valuable insights into your vehicle’s health, enabling you to address minor issues before they escalate into major problems. These codes help in identifying malfunctions, such as engine misfires, transmission issues, or sensor failures, allowing for timely repairs. A report by AAA indicates that preventative maintenance based on diagnostic data can lower the chances of breakdowns by up to 30%. CARDIAGTECH.NET offers advanced diagnostic equipment, ensuring you stay ahead of potential issues and maintain your Mercedes in optimal condition.
1.2 How to Read Mercedes Fault Codes
What tools do you need to read Mercedes fault codes?
To read Mercedes fault codes, you’ll need an OBD-II (On-Board Diagnostics II) scanner. This tool connects to your car’s diagnostic port and retrieves the stored fault codes. Modern scanners can also provide real-time data and perform advanced diagnostics. According to a study by the Society of Automotive Engineers (SAE), using a quality OBD-II scanner can improve diagnostic accuracy by up to 25%. CARDIAGTECH.NET offers a range of high-quality OBD-II scanners tailored for Mercedes vehicles, providing accurate and reliable diagnostic information.
1.3 Interpreting Mercedes Fault Code Structure
What does each digit in a Mercedes fault code signify?
Mercedes fault codes typically follow a standard format, beginning with a letter indicating the system (e.g., P for Powertrain, B for Body, C for Chassis, U for Network). The subsequent digits provide further details about the specific issue. For example, P0XXX codes generally refer to generic powertrain issues, while P1XXX codes are manufacturer-specific. Understanding this structure can help you narrow down the problem and find the appropriate solution. CARDIAGTECH.NET provides resources and tools to help you interpret these codes accurately, making the diagnostic process more efficient.
2. Common Mercedes Error Messages Explained
What are some common Mercedes error messages, and what do they mean?
Several error messages frequently appear in Mercedes vehicles, each indicating specific problems. Understanding these common codes can help you quickly diagnose and address issues, maintaining your vehicle’s performance. CARDIAGTECH.NET offers comprehensive diagnostic tools and resources to help you decipher these codes and ensure your Mercedes runs smoothly.
2.1 Mercedes Fault Code: P261F71
What does the Mercedes fault code P261F71 mean?
Mercedes fault code P261F71 indicates a malfunction in the circulation pump output, specifically that the actuator is blocked. This issue is commonly seen in Mercedes Sprinter Vans. The likely cause is coolant intrusion into the vacuum system via the water pump. The coolant water pump in the OM651 4 Cylinder Diesel Engine is vacuum-actuated, and a failing internal seal allows coolant to enter the vacuum system. Driving the vehicle pulls the coolant deeper into the vacuum system, causing significant damage.
Possible symptoms include a check engine light, reduced acceleration, coolant leak, brake pedal pressure issues, and engine overheating. Parts that may need replacement include the water pump, coolant, seals, tubes, hoses, vacuum actuators, and the vacuum pump. The systems affected include the engine, cooling system, vacuum system, turbocharging, and brake system. This issue can be severe if left unfixed and requires a master-level technician. CARDIAGTECH.NET provides advanced diagnostic tools to accurately identify this fault and guide the repair process.
2.2 Mercedes Fault Code: P126A00
What does the Mercedes fault code P126A00 mean?
Mercedes fault code P126A00 indicates a faulty intake port shutoff actuator, a common issue in Mercedes Sprinter Vans. The likely causes are failures in the intake manifolds or the intake manifold actuator motor. Over time, the inside of the intake manifolds gets clogged with EGR soot, causing the intake swirl flaps to stick. This binding affects the motor, triggering the check engine light and a severe loss of acceleration.
The primary symptom is a significant loss of acceleration. Parts that may need replacement include the intake manifolds and the intake manifold actuator motor. The affected system is primarily the engine. This issue can be severe if left unresolved and requires a master-level technician. CARDIAGTECH.NET offers diagnostic solutions to quickly pinpoint this fault, ensuring efficient and effective repairs.
2.3 Addressing Common Mercedes Faults
How can CARDIAGTECH.NET help resolve common Mercedes fault codes?
CARDIAGTECH.NET offers a range of diagnostic tools and equipment specifically designed for Mercedes vehicles. These tools enable technicians and vehicle owners to quickly and accurately identify fault codes, understand their underlying causes, and perform the necessary repairs. By providing access to advanced diagnostic capabilities, CARDIAGTECH.NET helps reduce repair times, minimize unnecessary part replacements, and ensure that Mercedes vehicles are maintained to the highest standards.
3. Detailed List of Mercedes Fault Codes
What are the meanings of specific P, B, C, and U Mercedes fault codes?
Mercedes fault codes are categorized into P (Powertrain), B (Body), C (Chassis), and U (Network) codes, each indicating different areas of concern. Understanding these codes is crucial for accurate diagnostics and repairs. CARDIAGTECH.NET provides comprehensive lists and diagnostic tools to help you interpret these codes effectively.
3.1 P0400 Series Mercedes Fault Codes
What do the P0400 series Mercedes fault codes indicate?
The P0400 series Mercedes fault codes generally relate to issues within the vehicle’s emission control systems. These codes can indicate problems with the exhaust gas recirculation (EGR) system, exhaust pressure sensors, cooling fan controls, and other emission-related components. Addressing these codes promptly can help maintain your vehicle’s efficiency and reduce its environmental impact.
| 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 |
CARDIAGTECH.NET offers advanced diagnostic tools to accurately identify and resolve issues related to the P0400 series fault codes, ensuring your Mercedes complies with emission standards and operates efficiently.
3.2 P0500 Series Mercedes Fault Codes
What do the P0500 series Mercedes fault codes signify?
The P0500 series Mercedes fault codes primarily relate to vehicle speed sensors, idle control systems, and various sensor malfunctions. These codes can indicate issues with the vehicle speed sensor, idle control system, A/C refrigerant pressure sensor, and power steering pressure sensor. Addressing these codes promptly can help maintain your vehicle’s performance and safety.
| 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 |
CARDIAGTECH.NET offers advanced diagnostic tools to accurately identify and resolve issues related to the P0500 series fault codes, ensuring your Mercedes operates safely and efficiently.
3.3 P0600 Series Mercedes Fault Codes
What are the meanings of P0600 series Mercedes fault codes?
The P0600 series Mercedes fault codes relate to issues within the vehicle’s internal control modules and circuits. These codes can indicate problems with serial communication links, internal control module memory errors, generator control circuits, and malfunction indicator lamp (MIL) control circuits. Addressing these codes promptly can help prevent further damage and maintain your vehicle’s performance.
| 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 |
CARDIAGTECH.NET provides advanced diagnostic tools to accurately identify and resolve issues related to the P0600 series fault codes, ensuring your Mercedes operates reliably.
3.4 P0700 Series Mercedes Fault Codes
What do the P0700 series Mercedes fault codes indicate?
The P0700 series Mercedes fault codes pertain to issues within the transmission control system. These codes can indicate problems with transmission range sensors, fluid temperature sensors, input/turbine speed sensors, and shift solenoid malfunctions. Addressing these codes promptly can prevent severe transmission damage and maintain smooth vehicle operation.
| 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 |
CARDIAGTECH.NET offers advanced diagnostic tools to accurately identify and resolve issues related to the P0700 series fault codes, ensuring your Mercedes operates smoothly.
3.5 P0800 Series Mercedes Fault Codes
What are the meanings of the P0800 series Mercedes fault codes?
The P0800 series Mercedes fault codes relate to issues within the transmission and clutch control systems. These codes can indicate problems with reverse inhibit control circuits, upshift solenoids, clutch position sensors, and transmission fluid pressure sensors. Addressing these codes promptly can prevent further damage and maintain your vehicle’s performance.
| 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 |
CARDIAGTECH.NET provides advanced diagnostic tools to accurately identify and resolve issues related to the P0800 series fault codes, ensuring your Mercedes operates reliably.
3.6 P1000-P2000 Series Mercedes Fault Codes
What do the P1000-P2000 series Mercedes fault codes signify?
The P1000-P2000 series Mercedes fault codes cover a broad range of issues, including electronic gear selector module defects, knock control problems, immobilizer module malfunctions, and NOx trap efficiency issues. These codes can indicate problems with various engine and transmission components, requiring careful diagnosis and repair.
| 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 |
CARDIAGTECH.NET offers advanced diagnostic tools to accurately identify and resolve issues related to the P1000-P2000 series fault codes, ensuring your Mercedes operates efficiently.
3.7 Mercedes Body (B####) Fault Codes
What do the B-level Mercedes fault codes indicate?
B-level (Body) Mercedes fault codes refer to issues within the vehicle’s body systems, including lighting, climate control, seat adjustments, and airbag systems. These codes can indicate problems with headlamp range adjustments, automatic air conditioning, electric seat adjustments, and more. Addressing these codes promptly can enhance comfort, safety, and overall vehicle functionality.
| 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 |
CARDIAGTECH.NET provides advanced diagnostic tools to accurately identify and resolve issues related to the B-level fault codes, ensuring your Mercedes offers optimal comfort and safety.
3.8 Mercedes C-Level Fault Codes
What do the C-level Mercedes fault codes indicate?
C-level (Chassis) Mercedes fault codes pertain to issues within the vehicle’s chassis systems, including ABS, ESP, AIRmatic suspension, and steering systems. These codes can indicate problems with wheel speed sensors, CAN communication faults, level sensors, and brake light switches. Addressing these codes promptly can ensure vehicle stability, handling, and overall safety.
| 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 |
