Step-by-step fix
Step 1: Confirm the temperature sensor is a likely cause
- Look for symptoms that point to a bad sensor, such as the oven overheating, underheating, taking much longer than normal to preheat, or showing a temperature-related error.
- Check that the bake setting, temperature setting, and power supply are normal so you are not chasing a control or setup issue.
- Open the oven and find the temperature sensor. It is usually a thin metal probe mounted to the back wall inside the oven cavity with two screws.
- If the sensor is visibly bent, loose, burned, or damaged, replacement is a reasonable next step.
If it works: You have symptoms and a sensor location that match this repair.
If it doesn’t: If the oven will not power on at all, trips the breaker, or has multiple unrelated control problems, this may not be the right repair path.
Stop if:- You smell burning insulation, see melted wiring, or find obvious heat damage around the sensor area.
- The sensor location or mounting does not match what you can safely access from inside the oven.
Step 2: Shut off power and prepare the work area
- Turn the range off at the breaker or unplug it if the plug is accessible.
- Make sure the oven is fully cool before reaching inside.
- Pull out the oven racks to give yourself room to work.
- Put on gloves and set a flashlight nearby so you can keep one hand free while removing the sensor.
If it works: The range is de-energized, cool, and clear enough to work on safely.
If it doesn’t: If you cannot disconnect power safely, wait and do not start the repair until you can.
Stop if:- The breaker will not stay off or the outlet and cord area show signs of overheating.
- The range is hardwired and you are not comfortable confirming power is disconnected.
Step 3: Remove the old sensor from the oven cavity
- Locate the two screws holding the sensor to the oven's back wall.
- Support the sensor with one hand while removing the screws so it does not drop or pull hard on the wires.
- Gently pull the sensor a few inches into the oven cavity to expose the wire connector.
- If the connector does not come forward far enough, stop pulling and check whether the harness is clipped or needs rear access from behind the range.
If it works: The sensor is free from its mounting and the wire connection is accessible.
If it doesn’t: If the harness keeps slipping back into the insulation area, use needle-nose pliers carefully to hold the connector while you work.
Stop if:- The wire insulation cracks, the connector is burned, or the harness disappears into the cabinet where you cannot reach it safely.
- The mounting area is badly rusted or damaged and will not hold the new sensor securely.
Step 4: Disconnect the harness and install the new sensor
- Separate the old sensor from the wire harness by pulling on the connector body, not the wires.
- Compare the new sensor to the old one so the probe length, connector style, and mounting bracket match.
- Connect the new sensor firmly to the harness until the connection feels fully seated.
- Tuck the connector and extra wire back through the opening without pinching or scraping the insulation.
- Line up the mounting holes and reinstall the screws snugly so the sensor sits flat against the oven wall.
If it works: The new sensor is connected securely and mounted in the correct position.
If it doesn’t: If the new part does not match the old one exactly enough to mount and connect cleanly, pause and verify the replacement part for your exact range.
Stop if:- The connector is loose, overheated, or will not lock together securely.
- The new sensor cannot be mounted without forcing the bracket or cross-threading the screws.
Step 5: Reassemble and restore power
- Reinstall the oven racks.
- If you had to move the range or remove a rear panel, put everything back in place before restoring power.
- Plug the range back in or turn the breaker on.
- Set the oven to bake at a moderate temperature and watch for a normal preheat start.
If it works: The oven powers up normally and begins a bake cycle without immediate faults.
If it doesn’t: If the display shows the same error right away, turn power back off and recheck the sensor connection and part fit.
Stop if:- You see sparking, smell hot wiring, or the breaker trips when power is restored.
Step 6: Verify the repair in real use
- Let the oven complete preheat and, if you have one, place an oven thermometer inside to compare the actual temperature after the oven cycles a few times.
- Watch for steadier heating, normal cycling, and the absence of the original overheating or underheating problem.
- Run one normal cooking cycle or a short bake to confirm the repair holds after the oven has been hot for a while.
If it works: The oven heats in a normal range and the original temperature problem is gone.
If it doesn’t: If temperatures are still far off after the new sensor is installed, the issue may be in the control, wiring, or calibration rather than the sensor alone.
Stop if:- The oven still overheats badly, will not regulate temperature, or shows repeated fault codes after the sensor replacement.
Replacement Parts
Repair Riot may earn a commission from qualifying purchases, at no extra cost to you.
FAQ
What does an oven temperature sensor do?
It tells the control how hot the oven cavity is. If it reads wrong, the oven can overheat, underheat, or cycle poorly.
Where is the oven temperature sensor located?
On most ranges, it is mounted inside the oven cavity on the back wall near the upper area. It looks like a slim metal probe held by two screws.
Can I replace the sensor from inside the oven?
Usually yes. Many sensors can be removed from inside the oven cavity, though some ranges may need rear access if the connector does not pull forward far enough.
Will a new sensor fix an oven that is still off by a little?
It can if the old sensor was failing, but small temperature differences can also come from normal cycling or a calibration setting. If the oven is still far off after replacement, the control or wiring may be the real cause.
Do I need to replace the sensor if the oven still heats?
If the oven heats but does not regulate temperature correctly, the sensor is still a common cause. Heating alone does not mean the sensor is reading accurately.