LG · Range (Gas)

LG Range (Gas) F20 error code

Difficulty: Hard · Cost: $100–$300 · Duration: 5m

The F20 error means your LG range detected a failure in the lower oven door locking system. This is similar to the F10 error but affects the lower oven instead of the upper. The door lock is required during the self-clean cycle to keep the oven door sealed while temperatures inside reach extremely high levels. When the locking mechanism cannot engage or disengage correctly the oven stops the function as a safety measure. A reset clears it in some cases but if F20 keeps returning the door lock assembly will need to be inspected and replaced by a technician.

Common causes

Lower oven door lock motor or mechanism has malfunctioned or failed
Door lock assembly is physically obstructed or jammed
Wiring connection to the lower oven door lock motor is loose or damaged
Temporary electronic glitch causing a false door lock error

How to fix it

1

Press the CLEAR/OFF key to clear the error and try the original function again
2

If F20 reappears turn off the circuit breaker for the range and wait 30 seconds
3

Turn the circuit breaker back on and check if the error has cleared
4

If F20 persists after resetting the lower oven door lock assembly needs inspection and replacement by a qualified technician