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

NOTE: If 100-4, 94-4, 4407-4, 3609-4, and 3610-4 are present, repair the short to ground between pins 82 of the 120-pin ECM connector and the engine oil, hydrocarbon doser fuel line, hydrocarbon doser fuel compensation sensor, DPF inlet, and DPF outlet pressure sensors.

NOTE: If 100-4, 94-4, and 4407-4 are present, repair the open between pin 82 of the 120-pin ECM connection 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.