DESCRIPTION:
This fault code sets when the engine oil pressure is less than a calibrated threshold.
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:
1. None.
2. Engine derate.
3. Engine shut down – Calibration dependent.
VERIFICATION:
Check at engine operating temperature.
NOTE: Whenever a low engine oil pressure is confirmed the crankshaft main bearings and rod bearings should be inspected for damage or excessive wear.
NOTE: When active, the engine has a 25% derate. Once minimum oil pressure is achieved for a specific time, the fault will go inactive.
PROBABLE CAUSES:
1. If any other oil pressure sensor faults, fix those first.
2. Oil pressure sensor.
3. Oil pressure sensor connector/harness.
4. Mechanical failure causing low oil pressure.
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