GE Refrigerator Error Code F123

F123 indicates that the refrigerator's control system detected a door-closed signal from the freezer door switch at the same time a key input was registered on the temperature control board. This combination of signals is flagged as a fault because it suggests one of the components involved is behaving unexpectedly. Common sources include a stuck control panel button, a faulty door switch, or a wiring issue between these components and the main board.

Start by inspecting the control panel buttons for any that feel stuck or unresponsive, and check the freezer door switch for proper operation by testing whether it changes state when the door opens and closes. If either component tests faulty, it will need to be replaced. Also inspect the wiring harness connectors between the door switch, temperature board, and main control board for corrosion or damage. If the temp board itself is found to be defective, board replacement is typically required.

Repair costs depend on which component is at fault. A door switch replacement is generally the least expensive repair, typically ranging from around $20 to $75 for parts, plus labor if a technician is used. Temperature control board replacement tends to cost more, with parts ranging from roughly $80 to $200 or more depending on the model. A diagnostic service call from a technician usually runs between $75 and $150 before parts and labor are added.

A reset by unplugging the refrigerator for several minutes may temporarily clear the F123 code, but if the underlying hardware fault persists, the code will return. If the fault is caused by a stuck button, a failed door switch, or a damaged wiring harness, those components need to be physically inspected and repaired before the code will clear permanently. A reset alone is not a fix.

F123 is primarily a control system fault rather than an immediate safety hazard. However, if the temperature control board is malfunctioning, it could potentially affect the refrigerator's ability to maintain proper setpoints or respond correctly to user inputs. It is advisable to address the fault promptly to ensure the appliance continues to regulate temperature correctly and prevent food spoilage.