Diagnostic Trouble Code List Index
Warning light on the dash? Read through our trouble codes lists to find out what the code means and possible causes.Engine Diagnostic Codes
Full list of engine, PCM diagnostic trouble codes. Find out why that check engine light is on.
AntiLock (ABS) Brake Codes list
List of ABS brake trouble codes and their descriptions in detail.
Transmission Trouble Codes
Transmission trouble codes list to help you diagnose your car or truck.
Airbag (SIR) Codes List
Airbag system codes list meaning and descriptions.
Theft / Security Codes List
Theft deterrent and factory security computer codes.
Onstar codes that may cause your system to not function.