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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 100 FMI 3 (MCM) Engine Oil Pressure Sensor Circuit Failed High

DESCRIPTION:
Short to voltage or open on Engine Oil Pressure (EOP) circuit.

MONITORED PARAMETER:
Engine oil pressure.

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
1. Key on
2. Engine running

EXECUTION FREQUENCY:
Continuous when enabling conditions are met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
CEL

ENGINE REACTION:
None

VERIFICATION:
Check at engine operating temperature.

NOTE: If diagnostic leads to a mechanical (non-electrical) low oil pressure condition, all mains and connecting rods should be inspected.

NOTE: If 100-3, 94-3, and 4407-3 are present, repair the short to power between pin 82 of the 120 pin ECM connector and the engine oil, doser fuel line, and doser fuel compensation sensors.

PROBABLE CAUSES:
1. Engine oil pressure sensor connector/harness.
2. Engine oil pressure sensor.

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