Onan

25

UnclassifiedSpeed

What This Code Means

High idle speed

Possible Causes

  • •Air intake restriction
  • •Binding of the governor
  • •Air in fuel system
  • •Exhaust restriction
  • •Binding in the governor

Suggested Actions

  1. 1Check loads
  2. 2Check fuel rack return spring
  3. 3Check air in fuel system
  4. 4Check air intake restriction
  5. 5Check exhaust restriction
  6. 6Check binding in the governor
  7. 7Check injectors
  8. 8Check injection timing
  9. 9Check compression

Related Onan Fault Codes

264600-04412100-04023400-03735900-033233500-031FAULT CODE 7
Browse all Onan fault codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 25 on your specific Onan unit — cited to the OEM manual, not a forum guess.

TRY IT FREE