Code 36
Onan
Engine Stopped Unexpectedly
Generator shuts down; Code 36 displayed, indicating the engine stopped without a shutdown command.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Fuel starvation or air in fuel, Intermittent low oil pressure or high temperature switch, Loose control wiring, Faulty fuel shutoff solenoid
How to Fix / Troubleshooting
Safety first: Disable auto-start and open the main breaker. Allow the engine to cool before inspection.
- Check fuel level and valves: Ensure the fuel tank is not empty and all fuel shutoff valves are open. For diesel, check for air leaks on the suction side.
- Inspect fuel shutoff solenoid: Listen for a click at the solenoid when turning the key or start command on. If no sound, test for voltage at the solenoid. Replace it if it does not open with proper voltage.
- Check safety switches: Inspect wiring to oil pressure and temperature switches. Loose or corroded connections can cause intermittent shutdowns. Reseat connectors.
- Harness inspection: Look for chafed or loose control harness wires between engine sensors and the controller. Repair any damage.
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Repair Difficulty
Medium
3/5
Required Part
Fuel Shutoff Solenoid
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