LG Range Error Code F

The F code on an LG range is a general function fault code displayed by the oven control system when it detects an abnormal condition it cannot resolve on its own. It can be caused by a temporary control board glitch, a gas supply issue, or a hardware failure in the control board or gas valve. The code stops normal oven operation to signal that service is needed. Checking the gas valves and performing a reset are the recommended first steps.

You should not attempt to use the oven while the F code is active, as the control system has detected a fault and normal operation has been interrupted. Using the range in this condition could be unsafe, particularly if the issue involves the gas valve or control board. Clear the code first and confirm normal operation before resuming cooking.

Repair costs depend on the root cause. If the issue is a gas valve problem, parts and labor can range from around $150 to $400 depending on the valve type and local labor rates. A control board replacement typically costs between $200 and $500 or more, including parts and labor. If the fault is caused by a wiring or connection issue, costs are generally on the lower end of the service call range.

You can attempt the basic reset steps yourself: press the UPPER CLEAR/OFF or LOWER CLEAR/OFF key, wait one hour, and verify that both the main gas shut-off valve and the oven gas shut-off valve are fully open. If the code clears and does not return, no further action is needed. However, if the F code comes back after removing power for five minutes and reconnecting, a qualified technician should inspect and service the range.

A reset will clear the F code if it was caused by a temporary glitch. Press the CLEAR/OFF key and wait one hour, or disconnect power at the circuit breaker for five minutes then reconnect. If the fault was temporary, the code should not return. If the F code reappears after the reset, there is an underlying hardware issue that requires professional service.