Maytag Microwave Error Code F2 — Shorted Thermistor Sensor
What this means
The F2 error code on Maytag microwaves indicates the oven cavity thermistor has a short circuit — it's reading an abnormally low resistance value. This makes the control board believe the microwave is overheated when it may not be. The microwave shuts down as a safety precaution. Common causes include damaged sensor wires, moisture on the thermistor, or an internal failure of the sensor.
Step-by-step fix
3 stepsAllow the microwave to dry and reset
If the microwave was recently used to heat very steamy food, moisture may have caused a temporary short on the thermistor. Unplug for 30 minutes to allow it to dry, then plug back in.
Use lids or microwave covers when heating liquids or steaming food to reduce moisture exposure on internal components.
Test the thermistor
Unplug the microwave. Remove the outer cabinet. SAFETY: Avoid the high-voltage capacitor. Disconnect the thermistor and test with a multimeter. At room temperature, expect approximately 50,000–60,000 ohms. A near-zero reading confirms a short.
If the thermistor reads correctly when disconnected but the error persists when reconnected, check the wiring for bare spots where the two wires may touch.
Replace the thermistor
If the sensor reads shorted, replace it. Remove the mounting hardware, install the new sensor, and reconnect the wires. Reassemble the cabinet cover and test.
Route the new thermistor wires away from heat sources and sharp edges to prevent future damage.
When to call a professional
Due to the dangerous high-voltage capacitor inside all microwaves, professional repair is recommended for any work requiring cabinet removal.
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.
Learn more about our sourcesParts you may need
Oven Cavity Thermistor
Part #W10250879 · $15–$30
Required if thermistor reads near zero (shorted)
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