What does error code FO mean on a LG dryer?

Lint filter not inserted. The lint filter isn't inserted properly, so the dryer stops.

Can I fix LG code FO myself?

Start with these safe checks: Remove the lint filter and reinsert it fully into its housing. If FO continues, request service.

When should I call a technician for code FO?

If FO continues, request service. Unplug it or switch the breaker off before you remove any panel. Don't test or replace wiring, control boards, heating elements or motors under power. If you see scorching, smell burning, or the breaker trips again, leave it off and call a qualified appliance technician or electrician.

LG Dryer Error Code FO: Lint filter not inserted

What FO means

The lint filter isn't inserted properly, so the dryer stops.

Likely causes

Lint filter not seated

Safe first checks

Remove the lint filter and reinsert it fully into its housing.

When to stop

If FO continues, request service.

Checked against: LG USA Support: LG Dryer error code list. Codes can differ by model and year, so confirm with your owner's manual.