359
UnclassifiedSpeed
What This Code Means
Engine cranks but will not start
Possible Causes
- •Fuel level is below pickup tube in tank
- •Fuel solenoid not energized
- •Air in the fuel system
- •Loose wiring connections, Base Board
- •Faulty Start Relay
- •Faulty Fuel ON Relay
- •Faulty Fuel Solenoid / Fuel pump linkage
- •Inoperative Coolant Heater (cold weather)
- •Faulty Harness / Governor actuator / Base Board (Electronic Governed Engine)
- •Faulty Electronic Governor Power Module
- •Restricted fuel supply
- •Faulty Fuel Feed Pump
- •Poor Fuel Pump Delivery at Nozzle Inlet
- •Faulty Fuel Injector Functioning
- •Low engine compression
- •Faulty Fuel Injection Pump
Suggested Actions
- 1Verify fuel level is above pickup tube in tank
- 2Check fuel suction lines
- 3Check for air in the fuel system
- 4Check Start Relay
- 5Check Fuel ON Relay
- 6Check Fuel Solenoid / Fuel pump linkage
- 7Check if fuel solenoid is energized
- 8Check for loose wiring connections on Base Board
- 9Check Coolant Heater operation in cold weather
- 10Check Harness, Governor actuator, and Base Board on Electronic Governed Engines
- 11Check Electronic Governor Power Module
- 12Check for restricted fuel supply
- 13Check Fuel Feed Pump
- 14Check Fuel Pump Delivery at Nozzle Inlet
- 15Check Fuel Injector Functioning
- 16Measure engine compression
- 17Check and service Fuel Injection Pump
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 359 on your specific Onan unit — cited to the OEM manual, not a forum guess.
TRY IT FREE