KitchenAid Range Error Code F4E3

F4E3 indicates an over-temperature condition during the self-clean cycle, specifically a temperature runaway error. The oven's control system detected that the cavity temperature exceeded safe limits and continued rising instead of being regulated. The range shuts down the clean cycle automatically as a safety response. This fault involves the bake relay, gas valve, oven temperature sensor, and control board.

Resetting the range by cutting power at the breaker may temporarily clear the F4E3 code, but it will not fix the underlying problem. If the bake relay, gas valve, or temperature sensor is faulty, the error will return, potentially during the next clean cycle. A proper diagnosis using the range's diagnostic mode is necessary to identify and resolve the actual component failure.

Repair costs vary depending on which component has failed. A replacement oven temperature sensor typically costs between $20 and $80 for the part alone, while a gas valve or control board can range from $100 to $350 or more for parts. Adding professional labor, total repair costs generally fall between $150 and $500 depending on the diagnosis and the specific components involved.

You should not run the self-clean cycle again until the root cause has been diagnosed and repaired, as a temperature runaway condition on a gas range is a serious safety concern. Normal baking may still function depending on the specific failure, but the underlying fault with the relay or gas valve needs to be confirmed before continued use. It is best to have a qualified technician inspect the range before operating it further.

The first step is to enter diagnostics mode and press the BAKE key to cycle the bake relay on and off, then verify that the gas valve opens and closes in response. If the relay does not cycle properly or the gas valve does not respond correctly, those components need to be replaced. A failed oven temperature sensor is also a common cause and should be tested for accurate resistance readings. Depending on which component has failed, the repair may involve replacing the control board, gas valve, or temperature sensor.