Diagnostic Trouble Code (DTC) Information

ECM-990A CONTROL MODULE, INTERNAL FAULT
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION




Condition
Diagnostic trouble code (DTC) ECM-990A is stored in the engine control module (ECM) if idling speed has deviated from tolerance.

Condition
none

Possible source
- This fault has probably occurred in the fuel injection system and the diagnostic trouble code (DTC) never occurs on its own. Look for the cause of the fault in another part of the system.

Condition
- none