Toyota Fault Codes Welcome to the Toyota fault codes database. You will find the most complete list of Toyota 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. Toyota Diagnostic Trouble Codes (DTC) for OBD 2, OBD II.P = Powertrain (Engine and Transmission, example code P1267)B = Body (includes Airbags, example code B0013)C = Chassis (includes ABS brakes, example code C1234)