Fuel Solenoid Fault
Generac
Fuel shutoff solenoid not operating correctly
Controller indicates 'Fuel Solenoid Fault'; engine will not receive fuel and fails to start.
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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
Open or shorted fuel solenoid coil, Broken solenoid wiring, Failed driver circuit on controller, Stuck solenoid plunger
How to Fix / Troubleshooting
Safety: Shut off gas supply before removing or testing the fuel solenoid. Work in a well-ventilated area.
- Listen for operation: Command a start and listen for a click at the fuel solenoid. No click suggests electrical or mechanical failure.
- Check voltage: With a meter, verify that 12 VDC is present at the solenoid connector during crank. If voltage is present but no movement, replace the solenoid.
- Inspect wiring: Trace the harness from the controller to the solenoid for damage or loose connections. Repair as needed.
- Controller output: If no voltage is present at the solenoid and wiring is intact, the controller's solenoid driver may be faulty. Replace the controller.
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Repair Difficulty
Medium
3/5
Required Part
Fuel Shutoff Solenoid
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