When using your oven, you rely on the temperature sensor to tell the oven when it is hot enough, or not hot enough, to reach your requested cooking temp. This sensor is supposed to ensure that your oven heats evenly and is never too hot or too cold. Most ovens vary a little bit in heating temp but if you notice your oven is significantly hotter, colder, or inconsistent then the problem is likely the temperature sensor. Especially if it heats evenly, but the temperature itself is unpredictable.
In this guide, we will walk through the steps of replacing your oven’s temperature sensor so you can bake and warm food at the correct settings once again.
You will need to gather a few supplies for this repair. Start by ordering the correct temperature sensor replacement part for your make and model of the oven. Then find a nut driver set, needle-nose pliers, and some kind of firm clamp like a chip-clip. This will be very helpful later.
- Nut Driver Set
- Needle-Nose Pliers
- Chip Clip or Clamp
- Replacement Temperature Sensor
- Oven Thermometer
- Make Sure the Oven is Cool
- Do not work with a hot or warm oven. This is not a repair where the oven needs to be warm, so let your oven cool completely if it has been used recently.
- Unplug Your Oven
- Pull your oven’s power plug from the wall or flip the breaker. Check the clock display to confirm that the oven’s power is fully off.
Access the Temperature Sensor
- Locate Your Temperature Sensor
- Your temperature sensor is a probe that extends into your oven on the top left corner of the back interior panel. Reach into your oven along the ceiling, toward the left back corner. You should find it there. If not, check your oven’s manual to find it’s alternate location.
- Remove the Door if Necessary
- If you cannot comfortably reach the sensor to work with it, you can remove your oven door and lay it on a towel to make room. This will require a separate guide.
Remove the Old Temperature Sensor
- Remove the 2 Mounting Hex Screws
- The temperature sensor is secured with two hex screws mounting it in place. Remove them with your nut driver and set the screws aside.
- Pull the Temperature Sensor Into the Oven
- Grasp the temperature sensor firmly and pull it several inches into the oven interior. Use your needle-nose pliers to guide the wires out until the wire harness (clip) comes through.
- Secure the Wires With the Chip Clip
- Clip the wires, behind the harness so that the harness is your side of the clip, to the oven housing. This will keep them from falling back into the housing when you disconnect the sensor. If you do not have a clip, you can try holding the wires with the needle-nose pliers while you work.
- Disconnect the Wire Harness
- Detach the two halves of the wire harness by pressing the release tab and pulling the wire clip apart. The sensor should now be free.
- Discard the Old Sensor
- Throw away the old sensor or keep it for electronics recycling.
Install the New Sensor
- Connect the Wire Harness
- Grab your new sensor immediately and connect its wire harness to the half you have secured. Now your wires are no longer at risk of falling back and you can remove the clip.
- Push the Sensor Into Place
- Push the sensor into the slot and turn if necessary so the mounting screw holes line up.
- Secure the Hex Mounting Screws
- Return the mounting screws into place and tighten them to secure the sensor.
Test the New Temperature Sensor
- Return Power to Your Oven
- Plug your oven back in or flip the breaker on to restore power to the unit.
- Heat the Oven with a Thermometer Inside
- Place an oven thermometer inside and set your oven to a specific temperature. Wait for the preheat beep and check to see if the new sensor has correctly gauged the temperature. Acceptable variance is within 5-15 degrees F
- Bake Something
- Finally, try baking something and see if it comes out correctly. This is a tasty alternative if you don’t have an oven thermometer.