Jenn-Air Range Error Code F4

The F4 code on a Jenn-Air range signals an open circuit in the oven temperature sensor circuit. This means the control board is receiving no electrical signal from the sensor probe inside the oven cavity. The range will not operate properly until the fault is diagnosed and repaired. The cause is usually a failed sensor or damaged wiring.

You should avoid using the oven when the F4 code is active. Without a functioning temperature sensor, the control board cannot monitor or regulate oven temperature, which creates a risk of overheating. Surface burners on a gas or dual-fuel range may still operate, but the oven itself should not be used until the repair is complete.

Repair costs vary depending on the failed component. A replacement oven temperature sensor typically costs between $20 and $75 for the part alone. If a professional technician performs the repair, labor charges will add to that cost, generally bringing the total into the $100 to $250 range. A control board replacement, if needed, is significantly more expensive and can push the total repair cost higher.

You can attempt to clear the F4 code by disconnecting the range from power for several minutes and then restoring power. However, if the underlying open circuit condition still exists, the code will return immediately or as soon as the oven is used. A reset is useful for confirming whether a fault is intermittent, but it is not a fix for a failed sensor or broken wire.

Start by testing the oven temperature sensor with a multimeter. Disconnect the sensor and measure its resistance at room temperature. A reading near 1080 to 1100 ohms indicates a good sensor, while infinite resistance confirms the sensor has failed and needs replacement. If the sensor tests correctly, inspect and test the wiring harness and connectors between the sensor and the control board for continuity and visible damage.