Sensor Failure
Eaton
Failed Engine or Generator Monitoring Sensor
Controller displays “Sensor Failure”, “Analog Input Fault”, or specific sensor error; readings show impossible values.
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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 temperature, pressure, or level sensor, Damaged sensor wiring harness, Incorrect sensor type installed, Corroded sensor connector
How to Fix / Troubleshooting
Safety first: Turn generator OFF and disconnect battery negative before unplugging sensors.
Steps:
- Identify sensor: Use the controller message or manual to determine which sensor (oil pressure, coolant temp, etc.) is faulted.
- Inspect wiring: Trace the harness from the sensor to the controller, looking for chafing, cuts, or loose connectors. Repair or replace damaged sections.
- Test sensor: With a multimeter, check resistance or continuity of the sensor per specifications. Replace if readings are out of range.
- Clear alarm: After replacing or repairing, clear the alarm and verify that the sensor reading on the controller is reasonable.
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Repair Difficulty
Medium
3/5
Required Part
Engine Sensor Harness
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