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Error code reference

Amana Range Error Code F4

Sensor resistance too low (below 500 ohms), indicating possible short in sensor wire harness.

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Sensor resistance too low (below 500 ohms), indicating possible short in sensor wire harness.

First step from the service manual

Check for a short in sensor wire harness and check sensor resistance.

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

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What F4 means on a Amana range

The F4 error code on an Amana range indicates the control board has detected a shorted circuit in the oven temperature sensing circuit. This means the resistance signal coming from the oven temperature sensor (RTD probe) has dropped below the minimum threshold the board expects, pointing to a short somewhere between the sensor itself and the control board. A short differs from an open circuit in that resistance collapses rather than goes infinite, which causes the board to read an erroneously high or invalid temperature signal and shut down oven operation as a safety measure.

For homeowners, this code typically means your oven has stopped heating and is protecting itself from a potential runaway temperature condition. The oven temperature sensor is a small probe mounted inside the oven cavity, usually at the upper rear wall, connected to the control board by a wiring harness. When that sensor or its wiring shorts together internally or against the oven chassis, the board cannot trust temperature readings and displays F4. The sensor itself is the most common failure point, but damaged or pinched wiring in the harness can cause the same fault.

Source: manufacturer service documentation.

Common causes of F4

  1. 01

    Failed oven temperature sensor (RTD probe)

    Part replacement

    The sensor element inside the probe has internally shorted, causing resistance to drop far below the normal range of approximately 1080 ohms at room temperature. This is the most common cause of F4 and will produce an out-of-range resistance reading when tested with a multimeter.

  2. 02

    Shorted or pinched sensor wiring harness

    Part replacement

    The wiring harness connecting the oven temperature sensor to the control board can become pinched against the oven cavity, burned by high heat, or damaged during prior service, causing two conductors to contact each other and creating a short circuit.

  3. 03

    Loose or corroded connector at the sensor or control board

    Wiring / connection

    A connector with corroded or bent pins can cause intermittent short conditions by allowing adjacent terminals to bridge together, producing a false low-resistance reading at the control board.

  4. 04

    Faulty electronic control board

    Part replacement

    If the sensor tests within spec and the wiring shows no visible damage or short, the control board's temperature sensing input circuit may have failed internally. This is the least likely cause but should be considered after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about F4

What does the F4 error code mean on an Amana range?
F4 on an Amana range means the control board has detected a shorted circuit in the oven temperature sensing circuit. The oven temperature sensor or its wiring harness is sending a resistance signal that has dropped below acceptable limits. The board stops oven operation to prevent unsafe temperature conditions until the fault is resolved.
How do I fix the F4 error code on my Amana range?
Start by unplugging the range and locating the oven temperature sensor at the rear wall inside the oven cavity. Disconnect the sensor and measure its resistance with a multimeter at room temperature. A good sensor reads close to 1080 ohms. If resistance is near zero or reads short, replace the sensor. If the sensor tests fine, inspect the wiring harness for pinched, burned, or bare wires making contact with the chassis or each other and repair or replace the harness as needed.
Is it safe to use my Amana range with an F4 error code active?
The oven should not be used while F4 is active. A shorted temperature sensor circuit means the control board cannot accurately monitor oven temperature, which creates a risk of the oven overheating without the board detecting it. Stovetop burners may still function depending on your model, but the oven itself should remain off until the fault is diagnosed and repaired.
How much does it cost to repair an F4 error on an Amana range?
If the oven temperature sensor is the cause, the part typically costs between $20 and $60 depending on the specific Amana model, and replacing it is a manageable DIY repair requiring only a screwdriver and a multimeter. A wiring harness repair or replacement adds moderate parts cost. If the control board has failed, the board itself can run $150 to $300 or more, and a professional technician will add labor charges on top of that, making board replacement the most expensive scenario.
How do I test the oven temperature sensor to diagnose an F4 on an Amana range?
Disconnect power to the range before starting. Remove the two screws securing the sensor probe at the back wall inside the oven and pull it forward enough to access the connector. Unplug the connector and set a multimeter to measure resistance (ohms). Place the probes on the two sensor terminals. At room temperature, a functioning Amana oven temperature sensor reads approximately 1080 ohms. A reading significantly below that or near zero confirms the sensor has shorted internally and needs replacement.

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