Jenn-Air Oven Error Code F4

F4 on a Jenn-Air oven means the control board has detected a shorted oven temperature sensor. The sensor probe inside the oven cavity is reading an abnormally low resistance value, which the board interprets as a short circuit rather than a valid temperature. The oven shuts down as a safety measure until the issue is resolved.

No. When F4 is active, the oven has locked out its heating functions because it cannot reliably read the cavity temperature. Running the oven without a functioning temperature sensor risks uncontrolled overheating. Do not attempt to bypass the lockout; repair the sensor or wiring first.

Unplug the oven from power before testing. Pull the sensor probe out from the back wall of the oven cavity and disconnect its wire connector. Set your multimeter to measure resistance (ohms) and probe both terminals on the sensor. At room temperature, a functional Jenn-Air oven RTD sensor should read approximately 1080 to 1090 ohms. A reading near zero confirms a short and means the sensor needs replacement. If the sensor reads correctly, reconnect it and inspect the wire harness for damage before suspecting the control board.

Start by unplugging the oven and locating the temperature sensor probe at the rear of the oven cavity. Disconnect the sensor and use a multimeter to measure its resistance; a healthy RTD sensor typically reads around 1080-1090 ohms at room temperature. If the sensor reads near zero or shows a dead short, replace it. If the sensor reads correctly, inspect the wire harness from the sensor back to the control board for damaged insulation, pinched wires, or corroded connectors.

An oven temperature sensor for a Jenn-Air oven typically costs between $20 and $60 for the part. If you are comfortable using a multimeter and disconnecting appliance wiring, this is a DIY-friendly repair that takes under 30 minutes in most cases. Professional labor adds $80 to $150 on average. If the control board turns out to be the cause, board replacement is significantly more expensive, often $150 to $350 for the part alone, which is why confirming the sensor and harness first is the right approach.