P0524

P0524-OIL PRESSURE TOO LOW

P0524 - Oil Pressure Too Low:

WHEN MONITORED
While the engine is running.

SET CONDITION
The oil pressure detected by the ECM is less than a calibrated value.

POSSIBLE CAUSES
- Low oil level
- (G6) Signal circuit short to ground
- Oil pressure switch
- Internal engine damage

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1. LOW OIL LEVEL
Check the engine oil level.

Q: Is the engine oil in the safe operating range?

YES: Go To 2
NO: Repair any condition that may cause the oil level to be above or below the safe operating range. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1

2. SIGNAL CIRCUIT SHORT TO GROUND
With the scan tool, erase DTCs.
Turn the ignition off.
Disconnect the oil pressure switch harness connector.
Turn the ignition on for 1 minute.

Q: Did DTC P0521 set?

YES: Go To 3
NO: Repair the (G6) signal circuit shorted to ground. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1

3. OIL PRESSURE SWITCH
Measure the engine oil pressure with a mechanical gauge.

Q: Is the oil pressure within the acceptable operating range?

YES: Replace the oil pressure switch. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1
NO: Repair internal engine damage. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1