F20

LG Oven Error Code F20 — Lower Oven Door Lock Failure

Moderate Repair 20–45 minutes Tools: Phillips screwdriver

What this means

The F20 error code indicates the lower oven's door locking system failed during a self-clean cycle. Similar to F10 for the upper oven, this means the lock motor or switch did not reach the expected position. This prevents the self-clean cycle from operating.

Step-by-step fix

2 steps
1

Reset the oven

Press CLEAR/OFF. Reset the circuit breaker for 30 seconds and restart.

Do not force a locked door open.

2

Check the latch mechanism

Inspect the door latch for debris or damage. Clean the latch area.

When to call a professional

If the lock motor has failed, professional replacement is needed.

Related error codes

F10

The upper oven door lock mechanism has failed to lock or unlock.

Moderate Repair · 20–45 minutes

Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.

Learn more about our sources

Parts you may need

Door Lock Motor and Switch Assembly

Part #6601ER1004C · $30–$60

If the lock motor has failed

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Quick Info

BrandLG
ApplianceOven / Range
Error CodeF20
DifficultyModerate Repair
Est. Time20–45 minutes