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Error code reference

KitchenAid Range Error Code F3E4

Bottom oven temperature sensor open (bottom oven sensor open).

KitchenAid codesKitchenAid range codes

Bottom oven temperature sensor open (bottom oven sensor open).

First step from the service manual

Unplug range, open back panels and verify the temperature sensor is plugged in.

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

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What F3E4 means on a KitchenAid range

The F3E4 error code on a KitchenAid range indicates that the control board has detected an open circuit in the bottom oven temperature sensor. The bottom oven uses a resistance temperature detector (RTD) probe, which changes its electrical resistance in proportion to temperature. When the circuit is open, it means the resistance reading has gone beyond the measurable range, typically because the circuit is broken somewhere between the sensor probe and the control board. The control board cannot regulate oven temperature without a valid sensor signal, so it disables the bottom oven and displays this fault.

The most common causes are a disconnected wire harness, a broken sensor probe, or damaged wiring along the sensor circuit. Physical disconnection at the sensor plug or at the control board connector is common after service work or shipping. The sensor probe itself can fail internally, producing an open circuit condition. Wiring routed near hot surfaces can also degrade over time, causing breaks or high-resistance connections that the board interprets as an open circuit.

Diagnosis begins with unplugging the range and accessing the back panels to verify the sensor connector is fully seated. If the connector is secure, the sensor probe resistance should be measured with a multimeter. A functioning RTD probe typically reads approximately 1080 ohms at room temperature. A reading of infinite resistance confirms the probe or its wiring has an open fault and the component needs replacement.

Source: manufacturer service documentation.

Common causes of F3E4

  1. 01

    Disconnected sensor wire harness

    Wiring / connection

    The wire connector linking the temperature sensor to the control board may have come loose at either end. Unplugging the range and inspecting the connector at the back of the oven cavity and at the control board is the first step.

  2. 02

    Failed temperature sensor probe

    Part replacement

    The RTD sensor probe can fail internally, breaking the circuit and producing an open reading. Confirm this by measuring the probe resistance with a multimeter at room temperature; infinite resistance indicates a failed sensor.

  3. 03

    Damaged or broken sensor wiring

    Part replacement

    Wiring routed near heat sources can crack, fray, or break over time, creating an open in the sensor circuit. Visually inspect the full length of the sensor wiring harness for charring, pinching, or breaks.

  4. 04

    Corroded or burned sensor connector

    Part replacement

    The connector terminals at the sensor plug can corrode or burn, interrupting the circuit even when the plug appears seated. Inspect the terminals closely for discoloration, pitting, or carbon deposits.

  5. 05

    Faulty control board

    Part replacement

    If the sensor and all wiring test correctly, the control board's sensor input circuit may have failed. This is the least common cause and should only be considered after ruling out all wiring and sensor issues.

See the test procedure for each cause

Frequently asked questions about F3E4

What does F3E4 mean on a KitchenAid range?
F3E4 means the control board has detected an open circuit in the bottom oven temperature sensor. This prevents the board from reading oven temperature, so the bottom oven is disabled. The fault points to a disconnected connector, a broken wire, or a failed sensor probe. Diagnosis starts with checking the sensor connection at the back of the range.
Can I fix the F3E4 error myself?
In many cases, yes. Start by unplugging the range, removing the back panels, and checking that the sensor wire connector is fully plugged in. If reconnecting the sensor clears the code, no parts are needed. If the sensor probe measures infinite resistance with a multimeter, replacing the sensor is a straightforward repair that many DIYers can complete with basic tools.
Is it safe to use my KitchenAid range while F3E4 is displayed?
The bottom oven should not be used while this error is active because the range cannot monitor or regulate bottom oven temperature without a working sensor. Using the oven in this condition risks overheating with no thermal feedback. The cooktop surface burners may still function normally, but the bottom oven cavity should remain off until the fault is resolved.
Will resetting the range clear the F3E4 error code?
Unplugging the range for a few minutes may temporarily clear the code, but F3E4 will return as soon as the control board checks the sensor circuit again and finds it open. A reset does not fix the underlying problem. The fault will only stay clear after the disconnected connection is secured or the faulty sensor or wiring is replaced.
How much does it cost to repair a KitchenAid range showing F3E4?
If the fix is simply reseating a loose connector, there is no parts cost. A replacement bottom oven temperature sensor probe typically costs between $20 and $60 for the part alone. If a professional technician is needed, total repair costs including labor generally range from $100 to $250 depending on your location and whether additional components such as wiring or the control board require replacement.

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