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Error code reference

Jenn-Air Range Error Code F3

Oven temperature sensor

Jenn-Air codesJenn-Air range codes

Oven temperature sensor - short circuit.

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What F3 means on a Jenn-Air range

The F3 error code on a Jenn-Air range indicates a short circuit condition in the oven temperature sensor circuit. The oven temperature sensor, sometimes called an RTD (resistance temperature detector), is a probe-style component mounted inside the oven cavity that monitors internal temperature and relays that data to the electronic oven control board. Under normal operation, the sensor changes resistance predictably as temperature rises and falls. A short circuit means the sensor's resistance has dropped abnormally low, sending a voltage signal outside the acceptable range to the control board, which then triggers the F3 fault.

The most common cause of this fault is a failed oven temperature sensor itself. Internal sensor failures often result from heat degradation over time, causing the sensing element or internal wiring within the probe to short together. However, the wiring harness connecting the sensor to the control board is also a frequent culprit, as damaged insulation, pinched wires, or contact with the oven cavity walls can create a short circuit path. The control board connector terminals should also be inspected for corrosion or physical damage.

Diagnosing this fault typically involves measuring the resistance of the oven temperature sensor with a multimeter. A healthy sensor at room temperature generally reads in the range of approximately 1,000 to 1,100 ohms. A shorted sensor will read near zero ohms or show a very low resistance outside this expected range. If the sensor tests within spec, the wiring harness and control board connections should be inspected closely for damage before concluding the control board itself is at fault.

Source: manufacturer service documentation.

Common causes of F3

  1. 01

    Failed oven temperature sensor

    Part replacement

    The sensor probe itself has developed an internal short circuit, often caused by heat damage over time. Testing the sensor with a multimeter will show near-zero or abnormally low resistance rather than the expected range around 1,000 ohms at room temperature.

  2. 02

    Damaged wiring harness

    Part replacement

    The wires running from the sensor to the control board may have damaged or melted insulation, causing two conductors to contact each other and create a short. Visually inspect the harness for burnt spots, pinching, or areas where wires contact the oven cavity.

  3. 03

    Corroded or damaged connector terminals

    Wiring / connection

    The connector between the sensor harness and the control board can develop corrosion or physical damage that causes a short circuit at the connection point. Inspect the connector pins for discoloration, moisture damage, or bent terminals.

  4. 04

    Faulty electronic oven control board

    Part replacement

    If the sensor and all wiring test correctly, the control board itself may have a failed input circuit that is incorrectly detecting a short. This is less common but should be considered after ruling out the sensor and wiring.

See the test procedure for each cause

Frequently asked questions about F3

What does F3 mean on a Jenn-Air range?
The F3 code on a Jenn-Air range indicates a short circuit detected in the oven temperature sensor circuit. The control board has received a resistance signal from the sensor that is abnormally low, outside the acceptable operating range. This typically points to a failed sensor probe or a wiring issue between the sensor and the control board. The oven will not operate normally until the fault is resolved.
Can I fix an F3 error on my Jenn-Air range myself?
A knowledgeable DIYer can diagnose this fault by using a multimeter to test the oven temperature sensor resistance at room temperature, looking for a reading near 1,000 ohms. If the sensor reads near zero or shows very low resistance, replacing the sensor is a straightforward repair involving disconnecting the harness and removing the probe from the oven cavity. Wiring inspection and connector cleaning are also tasks within reach of a careful DIYer. Control board replacement is more complex and may be better suited for a technician.
Is it safe to use my Jenn-Air range when F3 is displayed?
It is not recommended to operate the oven while the F3 fault is active. Because the oven temperature sensor is shorted, the control board cannot accurately monitor or regulate oven temperature, which could result in overheating or unpredictable behavior. The stovetop burners may still function depending on the model, but the oven should remain off until the fault is diagnosed and repaired.
Will resetting my Jenn-Air range clear the F3 error code?
Resetting the range by cutting power at the circuit breaker for several minutes may temporarily clear the F3 code, but the fault will return if the underlying problem with the sensor or wiring is not repaired. A reset does not fix the short circuit condition. It can be useful for confirming that the fault reappears consistently, which helps confirm a real component failure rather than a one-time control glitch.
How much does it cost to repair an F3 error on a Jenn-Air range?
If the oven temperature sensor is the cause, the repair cost is generally in the range of $100 to $250 when serviced by a technician, including the part and labor. Doing the sensor replacement yourself can bring the cost down to roughly $20 to $80 for the part alone. If the control board needs replacement, costs can rise significantly, typically ranging from $200 to $500 or more depending on the model and labor rates in your area.

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