Generac

6-1

UnclassifiedLubrication

What This Code Means

Fault lamp flashing; Fault lamp flashing (previous faults); Engine cranks and starts, then shuts down within about 5-10 seconds; Shutdown-Alarm Low Oil Pressure; Hard starting; Failure to start; No voltage on Wire 14C while cranking (per Procedure D); All other wires pass testing between CONN1P Connector and ECM

Possible Causes

  • •Active fault present
  • •Previous faults stored in memory
  • •Low engine oil level
  • •Low oil pressure
  • •Defective oil pressure switch
  • •Wiring harness problem with Wire 14C
  • •Wiring harness problem with Wire 566
  • •Sheared or partially sheared flywheel key
  • •Incorrect ignition timing
  • •ECM is not correctly powered
  • •ECM is not correctly grounded

Suggested Actions

  1. 1Fault will clear when condition is no longer present
  2. 2Fault code will be saved in fault history memory
  3. 3Turn key to ON position, do not start engine. After 30 seconds, fault lamp will flash previous faults stored in memory.
  4. 4Fault codes will be displayed with flashing sequence just like active faults.
  5. 5Sequence will restart at the beginning when list is completed.
  6. 6To stop sequence, either switch key OFF or start engine.
  7. 7Check malfunction indicator lamp (MIL)
  8. 8Measure the voltage of Wire 566 from the OPS switch to ECM
  9. 9Check flywheel crankshaft position sensor (CKP)
  10. 10Verify flywheel key is properly seated
  11. 11Verify ECM is correctly powered and grounded
  12. 12Test MPR

Related Generac Fault Codes

7441518151915201601160218001801180319001901002430
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