Kenmore Oven/Range Error Code F1 — Oven Temperature Sensor Failure
What this means
The F1 error code on Kenmore ovens and ranges typically indicates the oven temperature sensor (RTD sensor) is sending an abnormal signal to the control board. The sensor may be open, shorted, or reading outside the expected range. On some models, F1 can also indicate a control board EEPROM error. Without accurate temperature sensing, the oven cannot regulate heating safely.
Step-by-step fix
4 stepsReset the oven control
Turn off the oven at the circuit breaker for 5 minutes, then turn it back on. A temporary glitch in the control board can sometimes trigger an F1 error. If the error doesn't return, it was likely a one-time issue.
If the F1 appeared during a self-clean cycle, excessive heat may have temporarily affected the sensor — let the oven cool completely before resetting.
Locate the oven temperature sensor
Open the oven door and look at the top or rear wall of the oven cavity. The temperature sensor is a thin metal rod (typically 3–6 inches long) that protrudes into the oven, secured by one or two screws. The wires run through the back wall to the control board.
Do not confuse the temperature sensor with the oven igniter (gas models) — the sensor is a thin straight rod, while the igniter is a flat or oval glowing element near the burner.
Test the temperature sensor
Turn off the oven at the breaker. Remove the two screws holding the sensor and pull it into the oven cavity. Disconnect the wire harness. Test resistance with a multimeter — at room temperature (70°F/21°C), a working sensor should read approximately 1,080–1,100 ohms.
If the resistance is significantly different from 1,100 ohms at room temperature, the sensor is faulty. Even a 50-ohm deviation can cause temperature inaccuracy.
Replace the temperature sensor
Thread the new sensor's wire through the back wall. Reconnect the wire harness. Position the sensor inside the oven and secure with the mounting screws. Restore power and test by preheating the oven to 350°F.
Make sure the sensor does not touch the oven wall — it needs to be suspended in the air to read the ambient oven temperature accurately.
When to call a professional
If the sensor tests good at room temperature but the error persists, the electronic oven control board may have a faulty input circuit or corrupted EEPROM. Board replacement should be done by a qualified technician.
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
Oven Temperature Sensor (RTD)
Part #WB21X5301 · $10–$25
Required if sensor resistance is out of range
Electronic Oven Control Board
Part #WB27T10295 · $100–$250
Only if sensor tests good and error persists
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