Power Solutions International

521

UnclassifiedLubrication

What This Code Means

Oil pressure less than normal operating pressure; MIL ON; Engine Shutdown; Oil leaking past seals and rings; Oil Pressure High

Possible Causes

  • •Restriction in the oil flow path
  • •Malfunctioning oiling system
  • •Intermittent problem
  • •Oil pressure circuit shorted-to-ground in harness
  • •Faulty ECM
  • •Faulty Oil Pressure Switch (short circuit)
  • •Faulty engine oiling system

Suggested Actions

  1. 1Perform On-Board (OBD) System Check
  2. 2Warm engine at idle to normal operating temperature and increase RPM above limit set in diagnostic calibration
  3. 3Disconnect harness from Oil Pressure Switch
  4. 4Clear DTC 521
  5. 5Operate engine at idle for at least one minute and increase RPM above limit set by diagnostic calibration
  6. 6Verify engine oiling system with mechanical gauge

Related Power Solutions International Fault Codes

52210262381512129DTC 102 EDTC 341DTC 520DTC 524DTC 2229OTC 52 4
Browse all Power Solutions International fault codes

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