E11
Honda
Failed Start / Exceeded Crank Attempts
Generator attempts to start repeatedly but fails, controller logs E11
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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
Weak spark (gasoline models) or poor combustion, Incorrect fuel mixture (NG/LP pressure issues), Clogged carburetor or injectors, Faulty ignition coil or spark plug
How to Fix / Troubleshooting
Safety first: Disable auto-start and disconnect battery negative. Shut off fuel supply (close gas cock or fuel shutoff valve) before working on ignition or fuel components.
- Check spark plug: Remove the spark plug(s) from the Honda engine. Inspect for heavy carbon, oil fouling, or cracked insulator. Clean lightly with a wire brush or replace with the exact plug type and gap specified by Honda.
- Inspect ignition coil wiring: Ensure the ignition coil connectors are fully seated and that the coil ground is secure. Look for damaged plug wires.
- Verify fuel type and pressure: For NG/LP models, confirm that the correct fuel type is selected (if adjustable) and that gas pressure at the generator inlet meets Honda specifications under flow. For diesel/gasoline, ensure fresh fuel is used.
- Clean carburetor (gasoline): If the unit has sat unused, varnish may clog the carburetor jets. Remove the carburetor bowl and clean jets with carb cleaner. Replace gaskets as needed.
- Attempt restart: Restore fuel and battery, then perform a manual start. If E11 persists after basic checks, further diagnostics (compression test, injector testing) are required by a technician.
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Repair Difficulty
Medium
3/5
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