OBD II Trouble Code Definitions

OBD2 Diagnostic Trouble Code Tables 1995 - 2016
  • - Communication Link Malfunction
  • - Internal Control Module Memory Check Sum Error
  • - Control Module Programming Error
  • - Internal Control Module Keep Alive Memory (KAM) Error
  • P0604
    - Internal Control Module Random Access Memory (RAM) Error
  • - Internal Control Module Read Only Memory ROM) Error
  • - PCM Processor Fault
  • - Control Module VSS Output "B" Malfunction
  • P0620
    - Generator Control Circuit Malfunction
  • P0621
    - Generator Lamp "L" Control Circuit Malfunction
  • - Generator Field "F" Control Circuit Malfunction
  • P0645
    - A/C Clutch Relay Circuit
  • - Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
  • P0654
    - Engine RPM Output Circuit Malfunction
  • - Engine Hot Lamp Output Control Circuit Malfunction
  • P0656
    - Fuel Level Output Circuit Malfunction
  • Please go to our P0600-P0699 forum for aditional codes and for questions and answers about your particular trouble code.