GE Oven Error Code F12

F12 on a GE oven indicates a fault in the lower oven door latch switch circuit. The control board monitors continuity through connector CN1 to confirm whether the door latch is in the unlocked or locked position, and F12 appears when that continuity cannot be confirmed. This fault is directly tied to the self-clean safety interlock system and will prevent normal operation until it is resolved.

It is not recommended to use the oven while F12 is active. Because this fault involves the door latch switch circuit, which is a core component of the self-clean safety system, the control board may restrict oven functions to prevent unsafe operation. Attempting to force a self-clean cycle with this fault present could be hazardous.

Repair costs depend on which component has failed. A replacement door latch switch assembly typically costs between $30 and $90 for the part. If a professional appliance technician is needed, total repair costs including labor generally range from $120 to $250. Replacing the control board, if it turns out to be the root cause, can push costs higher, often between $200 and $400 total.

A knowledgeable DIYer with a multimeter can perform the first diagnostic steps, including checking the CN1 connector for a secure fit and testing continuity between pin 8 and pins 9 or 10 on that connector. If the connector looks clean and seated properly, tracing the wiring harness for damage is the next step. Replacing the latch switch assembly is a moderately difficult repair that requires disassembling part of the oven door or rear panel depending on the model.

Resetting the oven by cutting power at the breaker for a few minutes may temporarily clear the F12 display, but the code will return if the underlying fault in the latch switch circuit has not been repaired. A reset is useful for confirming whether the fault is intermittent, but it is not a fix for a failed switch, damaged wiring, or faulty connector.