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Error code reference

Kenmore Range Error Code F4 E7

Over temperature cavity 2 (temperature runaway error in second cavity).

Kenmore codesKenmore range codes

Over temperature cavity 2 (temperature runaway error in second cavity).

First step from the service manual

Enter Diagnostic mode and press BAKE key to cycle the bake relay on and off to verify relay operation.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What F4 E7 means on a Kenmore range

The F4 E7 error code on a Kenmore range indicates an over-temperature condition or temperature runaway event in the second oven cavity. This fault is triggered when the control board detects that the temperature in cavity 2 has exceeded expected limits or is rising uncontrollably without the ability to regulate it. Temperature runaway typically means the heating element is receiving continuous power when it should not be, or the temperature sensor is feeding inaccurate readings to the control board, causing the system to lose its ability to properly manage heat output.

The bake relay is a key suspect in this fault. This relay, located on the control board, is responsible for switching power to the bake element on and off in response to signals from the control. If the relay welds closed internally, it can supply constant power to the heating element regardless of the control board's commands, causing temperatures to climb beyond the set point and triggering the runaway condition. Diagnosing this requires entering the range's diagnostic mode and using the BAKE key to cycle the bake relay, confirming whether it responds correctly to control signals.

The oven temperature sensor (RTD probe) in cavity 2 is another common contributor. If the sensor has drifted out of calibration, developed an internal fault, or has a damaged wiring connection, it can report incorrect temperatures to the control board. This leads the board to either under-correct or fail to reduce power to the element at the right time. Wiring harness integrity between the sensor and control board should also be inspected for signs of heat damage, pinching, or loose connections.

Source: manufacturer service documentation.

Common causes of F4 E7

  1. 01

    Welded or stuck bake relay on control board

    Part replacement

    If the bake relay on the control board welds closed, it sends continuous power to the bake element even when the control tries to shut it off. Entering diagnostic mode and pressing the BAKE key to cycle the relay will reveal if the relay is not responding to commands.

  2. 02

    Faulty oven temperature sensor in cavity 2

    Part replacement

    A failed or out-of-calibration RTD temperature sensor in the second cavity can report incorrect temperature data, causing the control board to allow overheating. The sensor's resistance should be checked and compared against the expected specification at room temperature.

  3. 03

    Damaged wiring harness to the temperature sensor or relay

    Wiring / connection

    Heat damage, pinched wires, or loose connector pins between the temperature sensor and the control board can cause erratic or missing signals, mimicking a sensor or relay failure. A visual inspection and continuity check of the harness is recommended.

  4. 04

    Failed control board

    Part replacement

    If the relay and sensor both test correctly but the error persists, the control board itself may have an internal failure affecting its ability to read sensor data or properly switch the relay circuit in cavity 2.

See the test procedure for each cause

Frequently asked questions about F4 E7

What does F4 E7 mean on a Kenmore range?
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.
Can I fix the F4 E7 error on my Kenmore range myself?
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.
Is it safe to use my Kenmore range while the F4 E7 code is active?
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.
Will resetting my Kenmore range clear the F4 E7 error code?
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.
How much does it cost to repair a Kenmore range showing F4 E7?
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.

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