Frigidaire · Microwave Serious

F2 — Keypad / Control Board Input Fault

F2 indicates a keypad/touchpad or control-board input fault — the control is reading an invalid or stuck key. It is not a cavity/magnetron over-temperature condition (Frigidaire microwaves have no such temperature code in this family). Check the touchpad and control board.

Keep using it?
Limited use only
DIY difficulty
Moderate
Verified against
frigidaire.com ↗

How to fix it

  1. Unplug and let the microwave cool for 30 minutes.
  2. Verify vents (top, rear) are not blocked and the cooling fan spins freely.
  3. Disconnect the thermistor and measure resistance at room temp; compare to tech-sheet spec.
  4. Inspect the sensor harness for pinch points or melted insulation.
  5. Replace the thermistor if shorted; repair harness if damaged.
  6. If sensor and harness check good, replace the control board.

Why it happens

Typical signs: F2 on display · Cooking stops mid-cycle · Cavity feels unusually hot before fault · Cooling fan may run continuously

  • Shorted thermistor Sensor element or its wiring is shorted to chassis.
  • Actual high-temp event Blocked vent, failed cooling fan, or cooking empty triggered a real over-temp.
  • Pinched / chafed sensor harness Insulation worn through against a sharp edge.
  • Control board fault Board misreads a good sensor.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Frigidaire microwave touchpad / control board Common replacement
    Amazon →

More Frigidaire microwave codes

Child Lock 'Lock' / 'L' — Child lock engaged Cooling Fan 'Cooling Fan' / Fan-runs-after-cooking — Vent fan stuck on Demo 'Demo' / 'd' — Showroom demo mode on door 'door' message — Door not fully closed F1 F1 — Control board / thermistor open F3 F3 — Stuck key on touchpad

All Frigidaire codes → All microwave codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: frigidaire.com.