LG Oven Error Code F-12

The F-12 code on an LG oven indicates an EEPROM error related to the My Menu function. It means the oven's control board has detected that the memory storing your custom menu settings is corrupted or unreadable. This is a control board-level issue that may require a board replacement if a power reset does not resolve it.

A power reset can clear the F-12 error if the EEPROM corruption was caused by a temporary power interruption or minor data write issue. Disconnect the oven from power for at least five minutes before restoring it. However, if the underlying EEPROM cells on the control board have degraded or failed, the error will return and a reset will not provide a lasting fix.

If the issue requires a control board replacement, parts alone typically range from around $150 to $350 or more depending on the specific oven model. Adding professional labor, total repair costs can range from approximately $250 to $500 or higher. If a simple power reset resolves the error, there is no parts cost involved.

The first step is to perform a power reset by unplugging the oven or turning off its circuit breaker for several minutes, then restoring power. If the error clears and does not return, the fault was likely caused by a temporary power event. If the error persists or comes back repeatedly, the control board will need to be replaced, which is a more involved repair that requires working with electrical components.

The F-12 error is specific to the My Menu memory function and does not necessarily mean the oven's core cooking or safety systems are compromised. That said, operating an oven with an active fault code is generally not recommended until the cause is diagnosed. If the oven is displaying the error at startup and core functions appear affected, discontinue use until the control board is inspected.