The F2 error code on a Kenmore microwave indicates a shorted or stuck key on the membrane keypad. The control board has detected a key that is continuously pressed or a short circuit in the keypad matrix.
Causes
- Grease or moisture under the keypad membrane
- Damaged keypad membrane from physical impact
- Age-related delamination of keypad layers
What To Do
- Clean the keypad surface with a damp cloth to remove grease and food residue.
- Allow to dry completely, then power on and test.
- If F2 returns, the keypad membrane requires professional replacement — this is a common Kenmore OTR microwave repair.