Kenmore Range Error Code F4 E7

F4 E7 indicates an over-temperature or temperature runaway condition specifically in the second oven cavity. The control board has detected that cavity 2 exceeded safe temperature limits or lost the ability to regulate heat properly. This is a safety-related fault that requires diagnosis before the oven can be used again.

No, you should not use the second oven cavity while this fault is active. A temperature runaway condition means the oven may not be able to regulate its own heat, which poses a fire and safety hazard. Discontinue use of cavity 2 until the root cause has been diagnosed and repaired.

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, which contains the bake relay, can cost anywhere from $150 to $350 or more depending on the model. Adding professional labor will increase the total, generally by $100 to $200 depending on your area.

A knowledgeable DIYer can begin by entering diagnostic mode and using the BAKE key to test whether the bake relay cycles correctly. Checking the temperature sensor's resistance and inspecting the wiring harness for damage are also reasonable self-service steps. However, if the control board or relay needs replacement, some comfort with appliance disassembly and electrical safety is required.

Resetting the range by cutting power at the breaker may temporarily clear the code, but if the underlying cause such as a welded relay or failed temperature sensor is still present, the fault will return once the oven is operated again. A reset is useful for confirming whether the error is intermittent, but it does not constitute a repair.