Detroit DD15 GHG14 (2014-16) Fault Code: SPN 2791 FMI 31 (MCM) Smart Remote Actuator 3 (EGR), Deviation Error 2
DESCRIPTION:
The fault code sets when the Motor Control Module (MCM) detects that the Exhaust Gas Recirculation (EGR) valve position is incorrect.
MONITORED PARAMETER:
EGR position error.
TYPICAL ENABLING CONDITIONS:
Engine running
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle
PROBABLE CAUSES:
1. If any voltage codes exist, fix those first.
2. EGR valve actuator pull rod.
3. EGR actuator.
4. EGR valve.
5. Wiring between the EGR actuator harness and the ECM.
6. ECM failure.
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