Generic OBD II Diagnostic Trouble Codes

Saturday, August 1, 2009

Diagnostic Trouble Code numbers are read by plugging a code reader or scan tool into the vehicle diagnostic connector (usually located under the instrument panel near the steering column). The presence of a code will turn on the Check Engine Light. The light will remain on until the code has been erased. The code number does not tell you which part has failed. It only indicates a possible fault has been detected in the circuit, system or sensor described. Further testing is usually required to isolate the fault BEFORE repairs are made. For diagnostic charts and vehicle specific repair information, refer to a service manual, or the OEM technical website.


The diagnostic trouble codes listed are the most likely definition, some manufactures have specific codes for individual models. If the trouble code listed does not apply to your vehicle consult a Car Repair Manual)

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