Welcome to the Mercedes-Benz fault codes database. You will find the most complete list of Mercedes-Benz trouble codes available. The code definitions are a good starting point when determining the cause of the service light and will help you repair the problem. Mercedes-Benz Diagnostic Trouble Codes (DTC) for 1996+ models OBD 2, OBD II, MB STAR DiagTool Malfunction.
P = Powertrain (Engine and Transmission, example code P1267) B = Body (includes Airbags, example code B0013) C = Chassis (includes ABS brakes, example code C1234) U = Vehicle Network codes, (example code U2023)