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Error code reference

Jenn-Air Range Error Code F1-1

Oven temperature above 650°F (343°C) in bake mode.

Jenn-Air codesJenn-Air range codes

Oven temperature above 650°F (343°C) in bake mode.

First step from the service manual

Ohm sensor and harness (see Oven Sensor chart). If OK, change control.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F1-1 means on a Jenn-Air range

The F1-1 error code on a Jenn-Air range indicates that the oven control has detected a temperature exceeding 650°F (343°C) while operating in bake mode. This is a thermal runaway or over-temperature condition, meaning the oven climbed well above the setpoint without the control shutting it down at the appropriate level. The electronic oven control monitors temperature continuously through the oven temperature sensor (RTD probe), and when the sensed value surpasses this threshold, F1-1 is triggered as a safety fault.

The oven temperature sensor is a resistance-based probe, and its resistance value changes predictably with temperature. If the sensor is reading incorrectly due to a fault in the sensor itself or in the wiring harness connecting it to the control board, the control may misinterpret actual oven temperature and allow the heating element to run unchecked. A short to ground or altered resistance in the sensor circuit can produce a falsely low temperature reading, causing the control to keep calling for heat past safe limits.

The primary diagnostic approach is to ohm the sensor and harness against the published resistance values in the oven sensor chart. If the sensor and wiring check out within specification, the fault points to the electronic oven control board itself, which may be misprocessing the sensor signal or failing to cut power to the bake element at the correct setpoint. In that case, replacing the control board is the recommended corrective action.

Source: manufacturer service documentation.

Common causes of F1-1

  1. 01

    Faulty oven temperature sensor

    Part replacement

    The RTD temperature sensor may be reading inaccurately, sending a falsely low resistance signal that causes the control to keep heating past safe limits. Ohm the sensor against the oven sensor chart values to confirm whether it is out of specification.

  2. 02

    Damaged or shorted sensor harness

    Part replacement

    The wiring harness between the temperature sensor and the control board can develop shorts, breaks, or corrosion that distort the resistance reading. Visually inspect the harness for burned insulation or damaged connectors and test continuity through the wiring.

  3. 03

    Failed electronic oven control board

    Part replacement

    If the sensor and harness both test within specification, the control board itself is likely failing to correctly process the sensor signal or interrupt power to the bake element at the correct temperature. Control board replacement is the next step.

  4. 04

    Bake element relay stuck closed

    Part replacement

    A relay on the control board that is stuck in the closed position will allow continuous power to the bake element regardless of temperature, causing runaway heating. This is typically a control board failure rather than a standalone component issue.

See the test procedure for each cause

Frequently asked questions about F1-1

What does F1-1 mean on a Jenn-Air range?
F1-1 means the oven control detected a temperature above 650°F (343°C) during bake mode, which is a thermal runaway or over-temperature fault. The oven shuts down as a safety measure when this threshold is crossed. The fault is most commonly caused by a defective oven temperature sensor, a wiring harness problem, or a failed control board.
Will resetting the oven clear the F1-1 error code?
Cycling power to the range may temporarily clear the F1-1 code, but if the underlying cause is not corrected, the fault will return once the oven reaches that temperature threshold again. Resetting without diagnosis is not a fix. The sensor and harness should be tested before assuming the issue is resolved.
Is it safe to use my Jenn-Air range while it shows F1-1?
No, you should not continue using the oven in bake mode while this fault is active. The F1-1 code indicates the oven exceeded 650°F, which can damage internal components and poses a potential safety risk. Discontinue use and diagnose the sensor and control system before operating the oven again.
How do I fix a Jenn-Air F1-1 error code?
Start by disconnecting power to the range and using a multimeter to check the resistance of the oven temperature sensor, comparing it against the values listed in the oven sensor chart. Also inspect the sensor harness for damage, shorts, or loose connectors. If the sensor and harness test correctly, the electronic oven control board will need to be replaced.
How much does it cost to repair a Jenn-Air range with an F1-1 error?
Repair costs depend on the failed component. An oven temperature sensor typically costs between $20 and $60 for the part, while a replacement control board can range from $100 to $300 or more depending on the model. Adding professional labor will increase the total cost, generally ranging from $150 to $400 or higher for a complete repair.

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