Amana Range Error Code F4

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.

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.

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.

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.

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.