LG Dryer FO error code
- Dryer
On LG dryers, error FO indicates: Lint filter is out — reinsert the filter before starting a cycle. Some displays show this as F0 or Insert Filter. Start with a 5-minute power reset at the breaker, then follow the dryer-specific checks below before ordering replacement parts for FO.
Reviewed August 2025 · sources below
Safe to keep using?
No safety issue
This is a status or lock code, not a hardware fault.
How to fix FO
- Unplug the dryer or turn off power at the breaker before inspecting any components.
- Reset LG FO: leave power off for 5 minutes, restore power, then restart. Confirm whether FO returns.
- Check the most common cause for FO: Lint filter is out — reinsert the filter before starting a cycle.
- Inspect hoses, connections, and visible wiring for damage, clogs, or loose fittings.
- If a reset and basic checks don't clear the code, use our lookup tool for AI-powered diagnosis or contact a qualified technician.
- Reassemble, restore power, and run a test cycle. If FO returns, the faulty component likely needs replacement.
Call a pro when: Call a technician if you smell burning, see sparking, hear grinding from the motor, or the code returns after replacing the suspected part.
Next step
Still having trouble after the code fix?
This code is usually a status or maintenance notice, not proof of a failed part. Try the steps above first; then describe what still isn't working.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
What FO means
Lint filter is out — reinsert the filter before starting a cycle.
Likely causes
LG dryers stop if the filter is missing so lint cannot blow into the vent.
Check: Slide the lint filter fully into the housing until it seats, then start the cycle.
Est. cost: $0–$0
Too many elbows or a crushed flex hose chokes airflow even after you clean lint.
Check: Run the dryer and confirm strong air at the outdoor vent flap. Shorten or replace crushed duct.
Est. cost: $0–$40
Guided repair checklist
Complete the safe checks one at a time. Progress is saved for this browser so you can continue later.
0 of 6 checks recorded
Recommended next action
Start with this check before considering replacement parts.
Check 1 of 6
Unplug the dryer or turn off power at the breaker before inspecting any components.
Did the repair resolve the issue?
Restoring repair progress…
Questions about FO
What does FO error code mean on a LG dryer?
Lint filter is out — reinsert the filter before starting a cycle.
How do I reset LG dryer FO?
Unplug the dryer or switch it off at the breaker for 5 minutes, then restore power and restart. A reset clears a stored FO after a glitch, but the code will return if the underlying fault is still present.
What part do I need for LG FO?
Not always — some FO errors are caused by user-fixable issues like clogs or unbalanced loads. Try the troubleshooting steps first.
Can I fix LG error FO myself?
Many FO errors can be fixed DIY if you're comfortable with basic tools. Start with the reset and steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Other LG Dryer codes
Prevent this problem next time
- Clean the filter after each load and put it back before you start
Sources
Manufacturer meaning
The lint filter is out — the dryer will not start until it is reinserted.
FixApplianceCode guidance
Put the lint filter all the way back in. No replacement part is needed.
Source type: Manufacturer
Source: LG dryer lint-filter documentation
Last reviewed: 2026-08-24
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
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