DTC ECM-990A

Condition







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

Substitute value
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.

Fault symptom[s]
- none