CODE NO. 2

UnclassifiedLubrication

What This Code Means

The low oil pressure cutoff did not open within 10 seconds of starting; The low oil pressure cutoff closed during operation

Possible Causes

  • Low engine oil level
  • Engine oil leaks
  • Excess engine oil leading to foaming and loss of oil pressure
  • Defective low oil pressure cutoff switch (S1) wiring
  • Defective low oil pressure cutoff switch (S1)
  • Worn lubricating system
  • Worn engine

Suggested Actions

  1. 1Check engine oil level and add oil as necessary
  2. 2Repair oil leaks
  3. 3Drain excess oil
  4. 4Repair the low oil pressure cutoff switch (S1) wiring
  5. 5Replace defective low oil pressure cutoff switch (S1)
  6. 6Service worn lubricating system and/or engine according to Engine Subsystems and/or Honda recommendations

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for CODE NO. 2 on your specific Onan unit — cited to the OEM manual, not a forum guess.

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