mypros+
Error code reference

KitchenAid Range Error Code F4E3

Over temperature during clean mode (temperature runaway error).

KitchenAid codesKitchenAid range codes

Over temperature during clean mode (temperature runaway error).

First step from the service manual

Enter diagnostics mode and press BAKE key to cycle bake relay on and off; verify relay and gas valve operation.

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

MyPros+ Max

Get the full diagnostic procedure for F4E3.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F4E3 means on a KitchenAid range

The F4E3 error code on a KitchenAid range indicates an over-temperature condition during the self-clean cycle, specifically classified as a temperature runaway error. This means the oven's control system detected that the cavity temperature exceeded the expected threshold during the high-heat clean cycle and continued rising beyond safe operating limits without being brought under control. The oven temperature sensor (RTD probe) feeds continuous resistance-based readings to the electronic oven control board, and when those readings indicate runaway heating rather than controlled temperature management, the board triggers this fault and shuts down the cleaning cycle.

The primary components involved are the bake relay on the control board, the gas valve, the oven temperature sensor, and the control board itself. On gas ranges, the bake relay is responsible for cycling the gas valve open and closed to maintain the target temperature. If the relay sticks in the closed position, the gas valve remains open, fuel continues to flow, and the oven temperature climbs without limit. This is the most critical failure mode associated with this code and the reason the first diagnostic step focuses specifically on relay and gas valve cycling behavior.

Diagnosing this fault correctly requires entering the range's diagnostic mode and pressing the BAKE key to manually cycle the bake relay on and off while observing whether the gas valve responds appropriately. A relay that fails to open will allow continuous gas flow and confirm that the control board or relay itself is the root cause. A properly cycling relay shifts suspicion toward a faulty temperature sensor providing inaccurate readings, or a gas valve that is mechanically stuck open independent of the relay signal.

Source: manufacturer service documentation.

Common causes of F4E3

  1. 01

    Stuck bake relay on the control board

    Part replacement

    If the bake relay on the electronic control board sticks in the closed position, it continuously signals the gas valve to stay open, causing uncontrolled temperature rise. This is confirmed in diagnostics when the relay fails to cycle on and off when the BAKE key is pressed.

  2. 02

    Gas valve stuck open

    Part replacement

    The gas valve itself may be mechanically or electrically stuck open, allowing fuel to flow continuously even when the relay is cycling correctly. During diagnostics, a properly cycling relay combined with a non-shutting valve points to the gas valve as the faulty component.

  3. 03

    Faulty oven temperature sensor (RTD probe)

    Part replacement

    A defective oven temperature sensor can send inaccurate resistance readings to the control board, causing the board to misread actual cavity temperature and allow heating to continue past safe limits. Check the sensor's resistance values against specification at room temperature to identify a drift or short condition.

  4. 04

    Defective electronic oven control board

    Part replacement

    If the control board itself is damaged, it may fail to properly interpret temperature sensor data or fail to interrupt the relay circuit even when conditions call for it. This is typically diagnosed after ruling out the relay, gas valve, and sensor as individual components.

  5. 05

    Poor oven door seal during clean cycle

    Part replacement

    A damaged or worn door gasket can allow heat to escape unevenly, causing the oven to run excessively and the sensor to detect erratic temperature swings. Inspect the door gasket for tears, gaps, or deterioration that would compromise the sealed environment needed during self-cleaning.

See the test procedure for each cause

Frequently asked questions about F4E3

What does F4E3 mean on a KitchenAid range?
F4E3 indicates an over-temperature condition during the self-clean cycle, specifically a temperature runaway error. The oven's control system detected that the cavity temperature exceeded safe limits and continued rising instead of being regulated. The range shuts down the clean cycle automatically as a safety response. This fault involves the bake relay, gas valve, oven temperature sensor, and control board.
Is it safe to use my KitchenAid range after an F4E3 error?
You should not run the self-clean cycle again until the root cause has been diagnosed and repaired, as a temperature runaway condition on a gas range is a serious safety concern. Normal baking may still function depending on the specific failure, but the underlying fault with the relay or gas valve needs to be confirmed before continued use. It is best to have a qualified technician inspect the range before operating it further.
Will resetting my KitchenAid range clear the F4E3 error code?
Resetting the range by cutting power at the breaker may temporarily clear the F4E3 code, but it will not fix the underlying problem. If the bake relay, gas valve, or temperature sensor is faulty, the error will return, potentially during the next clean cycle. A proper diagnosis using the range's diagnostic mode is necessary to identify and resolve the actual component failure.
How do I fix an F4E3 error on a KitchenAid range?
The first step is to enter diagnostics mode and press the BAKE key to cycle the bake relay on and off, then verify that the gas valve opens and closes in response. If the relay does not cycle properly or the gas valve does not respond correctly, those components need to be replaced. A failed oven temperature sensor is also a common cause and should be tested for accurate resistance readings. Depending on which component has failed, the repair may involve replacing the control board, gas valve, or temperature sensor.
How much does it cost to repair an F4E3 error on a KitchenAid range?
Repair costs vary depending on which component has failed. A replacement oven temperature sensor typically costs between $20 and $80 for the part alone, while a gas valve or control board can range from $100 to $350 or more for parts. Adding professional labor, total repair costs generally fall between $150 and $500 depending on the diagnosis and the specific components involved.

Related KitchenAid range codes

All KitchenAid range codes
View all 79 KitchenAid range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass