Kenmore Range Error Code F4 E3

F4 E3 indicates an over-temperature condition during the self-clean cycle, also called a temperature runaway fault. The oven detected that cavity temperature rose beyond safe limits or was not being controlled properly by the bake relay. The appliance shuts down automatically to prevent damage or a fire hazard. The most common causes are a stuck bake relay on the control board or a defective oven temperature sensor.

You should not attempt another self-clean cycle until the root cause has been identified and corrected. If the bake relay is welded shut, running the oven in any mode could result in continued uncontrolled heating. Surface burners may remain usable if they operate on a separate circuit, but the oven cavity should be considered out of service until the fault is resolved.

Repair costs vary depending on which component has failed. A replacement oven temperature sensor typically runs in the range of $20 to $60 for the part. A new control board is the most expensive scenario, often ranging from $150 to $350 or more for the part alone. Adding professional labor can bring total repair costs to anywhere from $100 to $500 depending on your location and the specific model.

A knowledgeable DIYer can perform basic diagnostics, including entering diagnostic mode and pressing the BAKE key to test relay operation, as well as testing the oven temperature sensor with a multimeter. However, replacing a control board or internal wiring components involves working near high-voltage parts, so comfort with appliance repair is important before proceeding. If diagnostics point to a control board replacement, many technicians prefer to handle that repair to avoid damage to the new part during installation.

Disconnecting power to the range may clear the error code from the display temporarily, but it will not fix the underlying problem. If the bake relay is stuck, the temperature sensor is faulty, or the control board is defective, the fault condition still exists and the code will return when the self-clean cycle is attempted again. Proper diagnosis of the components involved is necessary before the repair can be considered complete.