Power Solutions International, Inc.

DTC 520

UnclassifiedLubrication

What This Code Means

Oil pressure sensors reading zero and not showing pressure; Engine oil pressure below 8 psi; DTC 520 becomes active

Possible Causes

  • •Faulty oiling system
  • •Faulty wiring between ECM and Oil pressure sensor
  • •Faulty oil pressure sender
  • •Faulty wiring between terminal C and Terminal 25
  • •Faulty ECM
  • •Intermittent problem

Suggested Actions

  1. 1Do not continue to crank the engine repeatedly if both master and slave oil pressure sensors read zero
  2. 2Verify engine oil pressure using a mechanical oil pressure gauge
  3. 3Repair faulty Oiling System
  4. 4Repair faulty wiring between ECM and Oil pressure sensor
  5. 5Replace faulty oil pressure sender
  6. 6Repair faulty wiring between terminal C and Terminal 25
  7. 7Replace ECM

Related Power Solutions International, Inc. Fault Codes

DTC 524DTC 2229DTC 236DTC1172522OTC 52 4341238129DTC 562DTC 342
Browse all Power Solutions International, Inc. fault codes

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