LG · Microwave

LG Microwave F17 error code

Difficulty: Hard · Cost: $80–$250 · Duration: Requires professional service

The F17 error means your LG microwave has detected a problem with the temperature sensor — the component that monitors heat levels inside the cavity during cooking. Without an accurate temperature reading the microwave cannot regulate cooking safely. There are no user steps to resolve this error and the unit requires a professional repair service to inspect and replace the faulty temperature sensor.

Common causes

Temperature sensor has malfunctioned or failed completely
Wiring connection to the temperature sensor is loose or damaged
Internal fault in the temperature sensor circuit

How to fix it

1

Unplug the microwave for 1 minute and plug it back in to attempt a reset
2

If F17 returns after resetting the temperature sensor needs inspection and replacement by a qualified technician