Electrolux Oven Error Code F31 — Shorted Oven Temperature Sensor
What this means
The F31 error code on Electrolux ovens indicates the control board has detected a short circuit in the oven temperature sensor (RTD probe) or its wiring. Instead of reading the expected resistance (about 1,080 ohms at room temperature), the board sees very low or zero resistance. This prevents proper temperature regulation. Causes include a failed sensor, sensor wires touching each other, or a connector that has shorted internally.
Alternate codes: F 31
Step-by-step fix
4 stepsTest the sensor resistance
Disconnect the sensor wires at the control board and measure resistance. It should read 1,080–1,100 ohms at room temperature. A reading near 0 ohms confirms a short circuit.
If the reading is normal at the board, the issue may be intermittent — check for damaged wire insulation.
Check for shorted wires
Inspect the sensor wiring from the oven cavity to the control board. Look for places where the two sensor wires may be touching each other (damaged insulation, melted jacket, pinched in the cabinet).
The wiring often passes near high-heat areas of the oven — insulation can degrade over time.
Test the sensor directly
If the wiring appears damaged, disconnect the sensor at the probe end and test it directly. If the sensor reads 1,080–1,100 ohms, the sensor is good and the wiring is the problem. If the sensor reads near 0, replace it.
Make sure you disconnect the sensor from all wiring before testing — testing with wires connected can give misleading results.
Replace the sensor or repair wiring
Replace the faulty sensor or repair the shorted wiring. Use high-temperature rated wire and connectors for any wiring repairs inside the oven area.
Standard wire and electrical tape cannot withstand oven temperatures — use only fiberglass-insulated wire rated for high heat.
When to call a professional
This is typically a DIY-friendly repair. Call a pro if the sensor and wiring test fine but the code persists.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.