GE Microwave Error Code F2 — Shorted Thermal Sensor
What this means
The F2 error code on GE microwaves indicates the thermal sensor (temperature sensor) has developed a short circuit. The control board detects an abnormally low resistance reading from the sensor and cannot regulate the microwave's internal temperature. This can be caused by a defective sensor, a faulty control board, or wiring issues.
Step-by-step fix
3 stepsReset the microwave
Unplug the microwave for 1 minute, then plug it back in. If the F2 code clears and doesn't return, it was a temporary glitch.
Test the thermal sensor
Unplug the microwave. Access the thermal sensor (usually mounted inside the cavity wall). Disconnect the sensor wires and test with a multimeter. A shorted sensor will read near 0 ohms.
Be extremely careful when working inside a microwave — the high-voltage capacitor can retain a lethal charge even when unplugged.
Replace the thermal sensor
If the sensor is shorted, replace it with a compatible part. Reconnect the wires and test.
When to call a professional
Microwave internal repairs involve a high-voltage capacitor that can be dangerous. If you are not trained in microwave repair, call a professional.
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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