LG Refrigerator Error Code F1+F2

F1+F2 on an LG refrigerator indicates a failure of the ambient temperature sensor. The sensor is either disconnected from the wiring harness or has developed an internal short. You can confirm this fault by pressing the FOOD and TEMP buttons simultaneously for 1 second: if all LEDs except the failure LEDs illuminate, the ambient sensor is confirmed as the problem.

The refrigerator may continue to cool in some capacity, but without accurate ambient temperature data the control board cannot optimize its performance, which could lead to inconsistent temperatures. Food safety could be at risk if cooling becomes unreliable. It is best to address the fault promptly rather than continuing to rely on the appliance while the sensor is faulty.

A reset may temporarily clear the displayed error code, but the fault will return if the underlying problem with the ambient temperature sensor or its wiring has not been fixed. Resetting without repairing is not a solution. Use the diagnostic button test (FOOD and TEMP held for 1 second) to confirm whether the sensor fault is still active after any reset.

If the cause is simply a loose connector at the ambient temperature sensor, you may be able to reconnect it yourself after locating the sensor and its harness. If the sensor itself has failed or the wiring is damaged, replacing those components requires basic electrical knowledge and comfort working with appliance wiring. A control board replacement, if needed, is more complex and typically benefits from professional service.

If only the ambient temperature sensor needs replacement, parts typically cost in the range of $15 to $50 depending on the model, with labor adding $75 to $150 if a technician is involved. If the wiring harness or control board is at fault, repair costs can range from $150 to $400 or more. Getting a diagnosis first will help avoid paying for unnecessary parts.