GE Oven Error Code F4 — Shorted Oven Temperature Sensor
What this means
The F4 error code on GE ovens indicates the oven temperature sensor (RTD) has a short circuit. The control board reads an abnormally low resistance, which it interprets as an extremely high temperature. This is the opposite of the F3 code (open circuit). The sensor, its wiring, or connectors are the usual cause.
Step-by-step fix
4 stepsPower cycle the oven
Turn off the breaker for 2 minutes, then restore power. If the code clears, it may have been a one-time glitch.
Test the temperature sensor
Unplug the oven. Disconnect the sensor wires and measure resistance with a multimeter. At room temperature it should read approximately 1,080–1,100 ohms. A reading near 0 ohms confirms a short circuit in the sensor.
Any reading below 900 ohms at room temperature is abnormal and indicates a shorted sensor.
Inspect wiring for shorts
Check the sensor wires for bare spots, pinched insulation, or areas where two wires may be touching. Repair or replace the harness if damaged.
Replace the sensor
If the sensor reads shorted, replace it. Unscrew the mounting bracket inside the oven, remove the old sensor, install the new one, and test.
When to call a professional
If the sensor and wiring are fine but the code persists, the control board may be misreading the signal. Have a technician test the board.
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.
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