GE Microwave F2 — What It Means & How to Fix It
F2 is a shorted thermal sensor fault — the sensor circuit reads closed when it shouldn't, so the oven locks out.
What this code means
GE defines F2 as a shorted thermal sensor. The oven sees a permanent 'normal temperature' state even when the cavity is cold, which it treats as a faulty reading.
F2 appears on startup or during a cycle and repeats even though the oven isn't hot — that's the difference from F1, which follows overheating.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Thermal sensor failed shorted | Common | no |
| Sensor wiring shorted to the frame | Less common | no |
| Intermittent glitch after a power event | Occasional | yes |
What you can try yourself
- Reset the breaker for 30 seconds and retry once — occasional glitches clear this way.
- If F2 returns, stop using the oven and call a technician.
- The sensor sits inside the cabinet near high-voltage components, so the replacement itself is not a DIY job.
- Give the technician the code; GE's service info points straight at the sensor and its wiring.
When to call a technician
- F2 immediately returns after the breaker reset
- The code appears on a completely cool oven
Typical professional repair cost: Service visit, typically $100–$250; a shorted sensor is a common, predictable replacement.
Frequently asked questions
Is F2 more serious than F1?
Not by much — both trace to the same thermal sensor circuit. F1 is an open reading, F2 a shorted one. Either needs the same test-and-replace path.
Can a power surge cause F2?
It can cause the one-time glitch form of it, which the reset clears. A true shorted sensor stays shorted until replaced.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related GE codes
- GE Microwave F1 F1 means the thermal sensor circuit reads open — or the oven detected excessive heat. Cool it down and try the 30-second reset.
- GE Microwave F3 F3 means the touch pad is reading as shorted — often a key pressed over 60 seconds or moisture on the pad.
- GE Microwave F4 F4 means the humidity sensor circuit reads open — the sensor that tracks steam during cooking isn't reporting, so the oven locks out.
- GE Microwave F5 F5 means the humidity sensor reads shorted — the steam sensor is stuck in one state, so sensor-cook cycles lock out.
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