GE Range Error Code FC2x

The FC2x error code on a GE range indicates a conflict in the oven door lock mechanism: both the Lock Home switch and the Unlock Home switch are reporting a closed state simultaneously. This is a logical impossibility under normal operation, since these two switches are designed to signal opposite positions of the door lock cam. The control system uses these switches to confirm that the lock motor has driven the cam to either the fully locked or fully unlocked position. When both report closed at the same time, the main board cannot determine the actual position of the lock assembly and flags the fault.

The most common hardware cause is a lock motor cam switch that has become mechanically stuck in the closed position. The cam assembly rotates to actuate each switch at the appropriate endpoint of travel. If the cam or one of its switches is stuck, jammed, or has failed internally, both switches can read as closed regardless of where the cam physically sits. Physical wear, debris, or a switch contact that has welded shut are all possible contributors to this failure mode.

If inspecting and replacing the lock motor cam switch assembly does not resolve the fault, the next suspect is the RPSM main control board itself. A faulty board may misread the switch input signals due to a failed input circuit or damaged sensing logic, producing a false FC2x condition even when the switch hardware is functioning correctly. Diagnosis should proceed in order: inspect the cam switch assembly first, then escalate to board replacement if the switches test correctly.