KitchenAid Range Error Code F4E2

F4E2 indicates an over-temperature condition during cook mode, meaning the oven temperature climbed beyond the acceptable range without the control system being able to regulate it. This is commonly called a temperature runaway error. The range shuts down automatically when this occurs to prevent damage or a safety hazard. The bake relay, gas valve, and oven temperature sensor are the primary components involved.

Resetting the range by disconnecting power may temporarily clear the code, but if the underlying fault remains, the error will return as soon as the oven reaches the overtemperature condition again. A reset does not fix the root cause. Proper diagnosis of the bake relay, gas valve, and temperature sensor is necessary to resolve the fault permanently.

Repair costs vary depending on the faulty component. A bake relay or oven temperature sensor replacement typically runs in the range of $100 to $250 including parts and labor. A gas valve replacement can cost between $150 and $350 or more depending on the part. Control board replacement is usually the most expensive option, often ranging from $250 to $500 or higher. Getting a diagnosis before ordering parts helps avoid unnecessary costs.

No, you should not use the oven while F4E2 is active. The error indicates the oven was unable to control its own temperature, which means the burner may have continued firing without stopping. Operating the oven in this condition poses a risk of extreme overheating. Have the bake relay, gas valve, and temperature sensor inspected before using the range again.

Begin by entering the range's diagnostics mode and pressing the BAKE key to cycle the bake relay on and off. Observe whether the relay responds correctly and whether the gas valve opens and closes with each cycle. If the relay is stuck or the gas valve does not respond, those components should be replaced. Also test the oven temperature sensor's resistance to confirm it is reading accurately.