DTC Quick Reference

DIAGNOSTIC TROUBLE CODES

A fault can occur in two ways, Intermittently or Permanently.

^ An Intermittent Fault is defined as a fault which is temporary and, in certain cases, recurrent.

^ A Permanent Fault is one which is present continuously.

For diagnostic system faults (with the exception of a faulty knock sensor (KS) signal or engine control module (ECM) knock control circuit) the engine control module will re-adopt the correct value of a previously faulty or missing signal once the signal has been restored, rather than continuing to use a fixed substitute value. In the case of output signals, however, the engine must have been switched off. The diagnostic trouble code (DTC) remains stored in the engine control module for some time.





Diagnostic Trouble Codes EFI-112 thru EFI-155






Diagnostic Trouble Codes EFI-212 thru EFI-432





Diagnostic Trouble Codes EFI-433 thru EFI-454





Diagnostic Trouble Codes EFI-455 thru EFI-553





Diagnostic Trouble Codes EFI-554 thru EFI-666