Jenn-Air Oven Error Code F3E1-0

The F3E1-0 error code on a Jenn-Air oven indicates that the secondary oven temperature sensor circuit is open. An open circuit means the electrical path through the sensor has been broken, so the oven control board cannot receive any resistance signal from the sensor. Oven temperature sensors are negative temperature coefficient (NTC) thermistors, meaning their resistance decreases as temperature increases. When the circuit is open, the board reads infinite or no resistance, which it interprets as a fault condition and triggers this code.

The secondary oven sensor is distinct from the primary sensor and is typically used to monitor a second cavity or serve as a redundant temperature reference in certain Jenn-Air configurations. Because the board expects a resistance reading that corresponds to a temperature within a plausible range, the first diagnostic step is to enter the oven's diagnostics mode and confirm whether the sensor is reporting a temperature between 50°F and 90°F, consistent with room temperature. A reading outside that range, or no reading at all, points directly to a fault in the sensor or its wiring circuit.

Common causes include a failed sensor where the internal element has broken, damaged wiring between the sensor and the control board, a corroded or loose connector, or in less frequent cases, a faulty control board that cannot properly read the sensor signal. Physical inspection of the sensor wiring harness and connectors is an important early step, as heat cycling inside the oven cavity can degrade wire insulation and connector contacts over time.