EOBD Generic Fault Codes starting P06xx
Computer and Auxiliary Outputs

• P0600 Serial Communication Link Malfunction
• P0601 Internal Control Module Memory Check Sum Error
• P0602 Control Module Programming Error
• P0603 Internal Control Module Keep Alive Memory (KAM) Error
• P0604 Internal Control Module RAM Error
• P0605 Internal Control Module ROM Error (Module Identification Defined by SAE J1979)
• P0606 PCM Processor Fault
• P0608 Control Module VSS Output "A" Malfunction
• P0609 Control Module VSS Output "B" Malfunction
• P0620 Generator Control Circuit Malfunction
• P0621 Generator Lamp "L" Control Circuit Malfunction
• P0622 Generator Field "F" Control Circuit Malfunction
• P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
• P0654 Engine RPM Output Circuit Malfunction
• P0655 Engine Hot Lamp Output Control Circuit Malfunction
• P0656 Fuel Level Output Circuit Malfunction