Jenn-Air Range Error Code F3-1

F3-1 indicates that the oven temperature sensor circuit is either open or shorted. The control board cannot read a valid resistance signal from the sensor probe inside the oven cavity. This fault typically disables oven heating to protect against uncontrolled temperatures. The first diagnostic step is to ohm out the sensor and its wiring harness.

You should not use the oven while this fault is active. Without a reliable temperature signal, the control board cannot regulate heat properly, which could result in overheating or underheating. Surface burners on a gas or electric cooktop may still function, but the oven should remain off until the sensor circuit is repaired.

If the oven temperature sensor is the cause, the part itself typically costs between $20 and $75 depending on the specific model, making it one of the more affordable oven repairs. If professional labor is involved, total repair costs including the part and service call generally range from $100 to $250. A damaged harness or failed control board will push costs higher, with control boards ranging from $150 to $400 or more for the part alone.

A knowledgeable DIYer can diagnose the issue by using a multimeter to check the resistance of the sensor at its connector, looking for approximately 1080 to 1090 ohms at room temperature. If the sensor reads open or shorted, replacing it is a straightforward repair involving disconnecting the probe from inside the oven and unplugging the harness connector. Harness repairs require more skill and care working near the control board.

Resetting the range by cycling the breaker or unplugging it may temporarily clear the display, but the code will return as soon as the oven tries to operate and reads the faulty sensor circuit again. A reset does not fix the underlying electrical fault in the sensor or wiring. A proper repair or part replacement is necessary to resolve the code permanently.