Common Mercedes-Benz diagnostic fault codes include P0466, B1000 and C1000. These codes normally indicate faults in the vehicle's circuit, body and chassis. P0466 signals a problem with the purge flow sensor circuit. B1000 shows low voltage supply in the head lamp's control unit, while C1000 indicates a faulty traction system control module.
All Mercedes-Benz fault codes starting with letter P indicate a circuit malfunction. Common circuit problem codes include P0715 and P0730. P0715 means there is an error in the transmission input or turbine speed sensor circuit, while P0730 indicates an incorrect gear ratio. P0600 is for loss of the serial communication link.
Common codes starting with letter B indicate errors in the body of the Mercedes-Benz. Code B1004 results from problems with the lower control panel due to incompatibility between the control unit and vehicle type. B1230 and B1233 indicate errors in the evaporator and refrigerant temperature sensors respectively.
Chassis error codes start with letter C and include C1010, C1020 and C1025. C1010 signifies low battery voltage, while codes ranging from C1020 to C1025 imply interruption of communication between the controller area network and engine modules. Code U0001 represents faults in the high-speed CAN communication bus. U0302 signals software incompatibility between a newly installed system and the transmission control module.