Detroit DD15 GHG14 (2014-16) Fault Code: SPN 656 FMI 7 (MCM) Injector Cylinder #6 Needle Control Valve Stuck Open
DESCRIPTION:
Injector cylinder #6 needle control valve stuck open.
MONITORED PARAMETER:
Injector cylinder #6 needle control valve.
TYPICAL ENABLING CONDITIONS:
Engine rpm = idle or higher.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine Idle: One minute.
NOTE: Submit completed diagnostics with warranty claim.
PROBABLE CAUSES:
1. Bent pins.
2. Spread pins.
3. damaged connector seal.
4. Faulty rear fuel injector harness.
5. Faulty injector with the out-of-range resistance.
6. Corroded pins.
7. Unseated pins.
8. Damaged wire.
9. Faulty MCM.
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