KitchenAid Oven Error Code F46

The F46 error code on a KitchenAid oven indicates that the main relay has been detected in a stuck condition. The main relay is a high-current switching component on the electronic control board responsible for supplying power to the oven's primary heating loads, including the bake and broil elements. When the control board's monitoring circuit detects that the relay has failed in a closed or open position and is no longer responding correctly to control signals, it triggers this fault code to prevent unsafe operation.

A relay that sticks closed is particularly hazardous because it can allow current to continue flowing to heating elements even when the control board has signaled them to shut off. A relay stuck open, by contrast, will prevent the oven from heating at all. The control board continuously monitors relay state against commanded output, and any discrepancy that falls outside expected parameters will latch this fault. The root cause is most often a failed relay on the control board itself, though wiring faults or a defective board can also produce this condition.

The initial diagnostic procedure requires switching off all loads except the IPC power relay, then managing the cooling fan and door lock according to the dedicated service paragraph. This isolates the relay circuit and confirms whether the fault is tied to a specific load path or to the relay component itself. Because this code involves potential uncontrolled power delivery to heating elements, the oven should not be operated until the fault has been fully diagnosed and repaired.