Kenmore Oven F4 error code
The oven temperature sensor has shorted. The control gets a false low-resistance reading and will not heat the oven.
Also shown as: F4
Last updated: October 6, 2026
What causes the F4 error?
- Shorted oven temperature sensor
- Pinched or melted sensor wiring touching metal
- Corroded sensor connector bridging the contacts
- Failed control board misreading the sensor
How to fix Kenmore F4 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power-cycle the range
Flip the range breaker off for 1 minute and back on. If F4 returns, the short is still present. - Look at the sensor and its wire
With the breaker off, find the sensor rod on the oven's back wall. Look for pinched wires or signs of melting where the sensor wire passes through the wall.Safety warning: Turn off the breaker before inspecting inside the oven. - Have the sensor tested
A technician will measure the sensor's resistance. A good sensor reads about 1100 ohms at room temperature; a reading near zero means it is shorted and needs replacement.
When to call a technician
- F4 returns after a breaker reset
- The sensor reads near zero ohms
- Sensor wiring is pinched, melted, or bare
- The sensor or control board needs replacement
Frequently asked questions
What does F4 mean on a Kenmore oven?
It means the oven temperature sensor has shorted out. The control gets an invalid reading and will not heat.
What is the difference between F3 and F4?
F3 means the sensor circuit is open (broken connection). F4 means it is shorted (signal stuck low). Both stop the oven and both point at the same sensor.
Can a shorted sensor cause overheating?
It can confuse the control, which is exactly why the oven locks out instead of heating blindly.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.