How to Fix GE Oven Error Code F3

RR Appliance
December 6, 2021
Oven Repair

If your GE oven is displaying an F3 error code, it means that the oven has detected an open or shorted oven temperature sensor. To fix the issue and resolve the F3 error code, the temperature sensor and its wiring will need to be checked. If the sensor or its wiring is not to blame, the oven’s control board is likely damaged and causing the error code. If you are receiving a combination of an F2 and F3 error code, the temperature sensor is most likely the cause of the problem.

This guide applies to most GE oven models, including the following:






















1. Check it is not just a glitch

Sometimes, a control board glitch causes an appliance to display an error code. It is likely to be a control board glitch if the error code has only occurred once and there have been no other signs that something is wrong with the oven. If it is just a glitch, nothing is wrong with the oven, and the error code can be resolved by either pressing Clear/Off or by disconnecting the power.

If the F3 error code cannot be cleared by pressing Clear/Off or a similar button, disconnect the power to the oven for a few minutes. When you reconnect the power to the oven, the error code should have cleared, and the oven is fine to keep using. However, if the error code returns or there are issues with the oven’s temperature, it is important to find the cause of the error code and make the necessary repairs.

2. Check the wiring

Sometimes the GE oven F2 error code is triggered by a loose temperature sensor wiring harness at the back of the oven. If the wiring harness is the cause of the error code, reconnecting the wiring harness will resolve the issue. Inspecting the wiring for signs of damage may also reveal the cause of the error code.

Access to the wiring harness will depend on the oven’s model. You may need to remove the back panel of the oven and/or remove a small panel that covers the temperature sensor. The control panel may also need to be removed to gain access to the back panel.

If the wiring harness is not the cause of the issue, on most models you will still need to remove the rear access panel to remove the temperature sensor from the oven (as described in step 3).

Follow these steps to check the wiring harness:

  1. Unplug the oven or turn off the power from the breaker box.
  2. Note where the temperature sensor is in the oven to help locate where the wiring harness is at the back of the oven. The sensor is usually a long, metal rod attached to the back wall of the oven.
  3. Remove the relevant access panels at the back of the oven to locate the wiring harness.
  4. Inspect the wiring harness for signs of damage, such as burn marks.
  5. Check that the sensor wiring harness is connected.

If the wiring harness was loose, reconnecting it should solve the F3 error code. If there was damage to the wiring harness, the temperature sensor should still be checked, as it is also likely to be damaged.

3. Check the temperature sensor

The oven’s temperature sensor regulates the oven’s temperature by telling the control board when to increase or decrease the heat. The sensor is usually a metal rod with a sensor located inside the oven, usually on the back wall, near the broil element.

The sensor is usually attached to the back wall of the oven with two screws that can be removed with a screwdriver. Most models will also require detaching the wiring harness from behind the oven to be able to remove the temperature sensor from the oven.

The temperature sensor will need to be removed so that you can conduct a multimeter resistance test to determine if the sensor has failed.

Follow these steps to remove and test the temperature sensor:

  1. Unplug the oven or turn off the power from the breaker box.
  2. Remove the back panel of the oven and disconnect the temperature sensor wiring harness.
  3. Locate the temperature sensor inside the oven, and remove the screws that secure it to the oven.
  4. Remove the temperature sensor from the oven.
  5. Set the multimeter to the ohms of resistance setting.
  6. Touch the multimeter probes to the sensor’s receptacles.
  7. The multimeter should give a resistance reading of between 1,060 and 1,100 ohms. Note that the sensor needs to be tested at room temperature to give a proper reading. If the reading is not between 1,060 and 1,100 ohms, the sensor is likely defective and will need to be replaced.

While getting a resistance reading that is not between 1,060 and 1,100 is a very good indication that the sensor has failed, a more accurate test requires knowing the amount of resistance that your specific oven model’s temperature sensor should have. The oven’s service manual, tech sheet, or the manufacturer should be able to provide you with that information.

Another way of identifying a defective temperature sensor is to put something cold and something hot on the temperature sensor while conducting the resistance test. If the temperature sensor is not defective, when you place something hot on the sensor, the resistance should decrease, and when you put something cold on the sensor, the resistance should increase.

A new temperature sensor can be bought online and installed the same way you removed the defective temperature sensor.

4. Check the control board

If the temperature sensor or wiring harness is not the source of the problem, there may be a more serious issue with the oven’s control board. The oven’s control board is located behind the control panel. While it is difficult to check the control board with a multimeter, the board can be examined for signs of damaged wiring and burning.

Replacing the control board can be expensive, so it is best to consult a trained technician to troubleshoot the issue before replacing the control board.


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