F31
Insignia
Oven Temperature Sensor Shorted or High Temperature Detected
Display shows F31 and oven may not heat or may shut off unexpectedly.
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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
Shorted sensor, Sensor wires shorted together, Harness pinched against metal, EOC misreading sensor input
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before working on the range.
- Inspect sensor and harness: Remove the oven sensor and inspect the wiring for melted insulation or contact with sharp metal edges.
- Measure resistance: At room temperature, the sensor should read about 1080–1100 Ω. A very low reading (near 0 Ω) indicates a shorted sensor; replace it.
- Check harness routing: Ensure the sensor harness is not pinched between panels or touching hot components. Reroute and secure with high-temperature-rated clips or ties.
- Control board evaluation: If a known-good sensor and harness still produce F31, the EOC may be misreading the sensor and should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor
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