E16
Hyundai Power Products
Preheat / Glow Plug Circuit Fault (Diesel Models)
Generator fails to start in cold weather, E16 displayed
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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
Failed glow plugs, Faulty preheat relay, Blown preheat fuse, Damaged glow plug wiring harness
How to Fix / Troubleshooting
Safety first: Turn OFF the generator and disconnect battery negative. Allow engine to cool before touching glow plugs.
- Check preheat fuse: Locate the preheat/glow plug fuse in the Hyundai control panel. Replace if blown and investigate for short circuits if it blows again.
- Inspect preheat relay: Listen for a click from the glow plug relay when preheat is commanded. If no sound, test for control voltage at the relay coil. Replace the relay if it does not operate.
- Test glow plugs: Disconnect the glow plug bus bar and measure resistance of each plug to ground. Replace any plug with open circuit or significantly different resistance from the others.
- Check wiring: Inspect the glow plug harness for burnt insulation or loose connections. Repair as needed.
- Retest cold start: After repairs, perform a cold start test and verify that the preheat indicator operates and E16 is cleared.
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Repair Difficulty
Medium
3/5
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