KitchenAid Range Error Code F4E7

F4E7 means the control board detected an over-temperature or temperature runaway condition specifically in oven cavity 2. The oven exceeded its safe temperature threshold and did not respond to commands to reduce or stop heating. This error points to a fault in the bake relay, the gas valve, or the temperature sensing circuit for cavity 2.

No. A temperature runaway error means the oven may not be able to stop heating itself when commanded, which is a fire and safety hazard. You should discontinue use of oven cavity 2 immediately and not operate it again until the underlying cause has been diagnosed and repaired.

Repair costs depend on which component has failed. A replacement oven temperature sensor is typically in the range of $20 to $60 for the part. A gas valve replacement can run $80 to $200 or more for the part alone. Control board replacement tends to be the most expensive path, with parts ranging from $150 to $400 depending on the model. Labor costs from a technician will add to any of these estimates.

Diagnosing and repairing F4E7 involves working with gas valve components and control board relays, which requires entering a service diagnostics mode and testing component response under power. While a knowledgeable DIYer can perform resistance checks on the temperature sensor, replacing a gas valve or control board on a gas range is best handled by a qualified appliance technician. Improperly serviced gas components carry serious safety risks.

A power reset may temporarily clear the error code from the display, but it will not fix the underlying mechanical or electrical fault. If the bake relay is welded shut or the gas valve is not operating correctly, the condition will return and the oven will remain unsafe to use. The root cause must be repaired, not just the error dismissed.