The F3 error code on a Kenmore range or oven indicates that the oven temperature sensor (RTD probe) circuit has an open condition — meaning the sensor or its wiring is broken and the control board cannot read the oven temperature. Without temperature feedback, the oven cannot cook accurately or safely.
Causes of the F3 Error
- Broken or disconnected oven temperature sensor probe
- Damaged sensor wiring (burned by heating element, pinched, or corroded)
- Defective control board
Troubleshooting
- Unplug the range for 5 minutes and restart. If F3 clears, it may have been a temporary connection issue.
- Inspect the temperature sensor — it’s typically mounted on the back wall inside the oven. Look for visible damage, burns, or disconnected wires.
- If the sensor or wiring is visibly damaged, it requires replacement before the oven can be used safely.
The oven temperature sensor is the most commonly replaced part for F3 errors. It is a user-accessible component on many Kenmore ranges, but professional replacement ensures correct calibration and safety. Our 90-day warranty covers all sensor replacements.