Mercedes-Benz Fault Codes
Circuit Malfunction
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
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
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 Malfucntion
P0656 Fuel Level Output Circuit Malfunction
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
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
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
P1581 ?
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
Body
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 left 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
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 DCM
Chassis
C1000 Traction System Control Module
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 B24/3 (acceler. sensor)
C1122 AIRmatic: fault in component B24/4 (acceler. sensor)
C1123 AIRmatic: fault in component B24/6 (acceler. sensor)
C1132 AIRmatic: fault in component B22/8 (level sensor)
C1133 AIRmatic: fault in component B22/9 (level sensor)
C1135 AIRmatic: fault in component B22/3 (level sensor)
C1140 BAS light, play in steering column causes steering angle sensor to lose memory(?)
C1142 ABS Lateral Acceleration Sensor Open/Shorted
C1144 AIRmatic: fault in component B7 (pressure sensor)
C1200 Stop Light Switch Open/Shorted/Implausible
C1300 Left Front Axle Solenoid Valve (Hold) (A7/3y6) Open/Shorted
C1303 Right Front Axle Solenoid Valve (Hold) Open/Shorted
C1311 Switchover Solenoid Valve (Release) Open/Shorted
C1312 Master Cylinder Switchover Valve
C1401 High Pressure Return Pump Circuit Open/Shorted; Will Not Shut Off
C1501 SPS P-Valve
C1504 BAS light, play in steering column causes steering angle sensor to lose memory(?)
C1512 Brakes Overheated
C1600 Temperature After Engine Is Turned Off
New Systems
U0001 High Speed CAN Communication Bus
U0002 High Speed CAN Communication Bus Performance
U0003 High Speed CAN Communication Bus ( ) open
U0004 High Speed CAN Communication Bus ( ) low
U0005 High Speed CAN Communication Bus ( ) high
U0006 High Speed CAN Communication Bus (-) open
U0007 High Speed CAN Communication Bus (-) low
U0008 High Speed CAN Communication Bus (-) high
U0009 High Speed CAN Communication Bus (-) shorted to Bus ( )
U0010 Medium Speed CAN Communication Bus
U0011 Medium Speed CAN Communication Bus Performance
U0012 Medium Speed CAN Communication Bus ( ) open
U0013 Medium Speed CAN Communication Bus ( ) low
U0014 Medium Speed CAN Communication Bus ( ) high
U0015 Medium Speed CAN Communication Bus (-) open
U0016 Medium Speed CAN Communication Bus (-) low
U0017 Medium Speed CAN Communication Bus (-) high
U0018 Medium Speed CAN Communication Bus (-) shorted to Bus ( )
U0019 Low Speed CAN Communication Bus
U0020 Low Speed CAN Communication Bus Performance
U0021 Low Speed CAN Communication Bus ( ) open
U0022 Low Speed CAN Communication Bus ( ) low
U0023 Low Speed CAN Communication Bus ( ) high
U0024 Low Speed CAN Communication Bus (-) open
U0025 Low Speed CAN Communication Bus (-) low
U0026 Low Speed CAN Communication Bus (-) high
U0027 Low Speed CAN Communication Bus (-) shorted to Bus ( )
U0028 Vehicle Communication Bus A
U0029 Vehicle Communication Bus A Performance
U0030 Vehicle Communication Bus A ( ) open
U0031 Vehicle Communication Bus A ( ) low
U0032 Vehicle Communication Bus A ( ) high
U0033 Vehicle Communication Bus A (-) open
U0034 Vehicle Communication Bus A (-) low
U0035 Vehicle Communication Bus A (-) high
U0036 Vehicle Communication Bus A (-) shorted to Bus ( )
U0037 Vehicle Communication Bus B
U0038 Vehicle Communication Bus B Performance
U0039 Vehicle Communication Bus B ( ) open
U0040 Vehicle Communication Bus B ( ) low
U0041 Vehicle Communication Bus B ( ) high
U0042 Vehicle Communication Bus B (-) open
U0043 Vehicle Communication Bus B (-) low
U0044 Vehicle Communication Bus B (-) high
U0045 Vehicle Communication Bus B (-) shorted to Bus ( )
U0046 Vehicle Communication Bus C
U0047 Vehicle Communication Bus C Performance
U0048 Vehicle Communication Bus C ( ) open
U0049 Vehicle Communication Bus C ( ) low
U0050 Vehicle Communication Bus C ( ) high
U0051 Vehicle Communication Bus C (-) open
U0052 Vehicle Communication Bus C (-) low
U0053 Vehicle Communication Bus C (-) high
U0054 Vehicle Communication Bus C (-) shorted to Bus ( )
U0055 Vehicle Communication Bus D
U0056 Vehicle Communication Bus D Performance
U0057 Vehicle Communication Bus D ( ) open
U0058 Vehicle Communication Bus D ( ) low
U0059 Vehicle Communication Bus D ( ) high
U0060 Vehicle Communication Bus D (-) open
U0061 Vehicle Communication Bus D (-) low
U0062 Vehicle Communication Bus D (-) high
U0063 Vehicle Communication Bus D (-) shorted to Bus ( )
U0064 Vehicle Communication Bus E
U0065 Vehicle Communication Bus E Performance
U0066 Vehicle Communication Bus E ( ) open
U0067 Vehicle Communication Bus E ( ) low
U0068 Vehicle Communication Bus E ( ) high
U0069 Vehicle Communication Bus E (-) open
U0070 Vehicle Communication Bus E (-) low
U0071 Vehicle Communication Bus E (-) high
U0072 Vehicle Communication Bus E (-) shorted to Bus ( )
U0073 Control Module Communications Bus Off
U0100 Lost Communication with ECM/PCM A
U0101 Lost Communication with TCM
U0102 Lost Communication with Transfer Case Control Module
U0103 Lost Communication with Gear Shift Module
U0104 Lost Communication with Cruise Control Module
U0105 Lost Communication with Fuel Injector Control Module
U0192 Lost Communication with Television
U0197 Lost Communication with Telephone Control Module
U0198 Lost Communication with Telematic Control Module
U0222 Lost Communication with Door Window Motor A
U0235 Lost Communications with Cruise Control Front Distance Range Sensor
U0301 Software Incompatibility with ECM/PCM
U0302 Software Incompatibility with TCM (Transmission Control Module)
U0303 Software Incompatibility with Transfer Case Control Module
U0321 Software Incompatibility with Ride Level Control Module
U0326 Software Incompatibility with Vehicle Immobilizer Control Module
U0327 Software Incompatibility with Vehicle Security Control Module