Written by
Maya Chen Editorial TeamPublished October 20, 2026
Error codeF20 error
ApplianceRange
Quick answer
F20 is LG's code for a door locking system failure (lower oven) on a range or oven. Reset steps from the manual and when to call for service.
Model compatibility: LG reuses codes across series and model years, so F20 error may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
F20 indicates a door locking system failure (lower oven).
When an LG range throws F20, the meaning given in the manual is: door locking system failure (lower oven).
F20 at a glance
Meaning: door locking system failure (lower oven).
Appliance: LG range with oven.
Series: The entry applies to LG ranges with an oven. No series restriction is given.
Recommended response
Push CLEAR/OFF and repeat the original operation. On a second appearance of the code, take the unit off power at the breaker for 30 seconds.
When the fix does not hold, or the steps can’t be done, the manual points to service.
LG oven and range service in Los Angeles starts with a call to (310) 742-8008. Have F20, the model number and your reset attempts at hand. Read about LG range repair.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your LG appliance?
Book a specialist visit for a clear estimate and approval before any repair.
