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Error code reference

Jenn-Air Range Error Code F2

Excessive cavity temperature

Jenn-Air codesJenn-Air range codes

Excessive cavity temperature - clean runaway or cooking runaway.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
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What F2 means on a Jenn-Air range

The F2 error code on a Jenn-Air range indicates that the oven cavity has reached an excessive temperature condition. The control board monitors the oven temperature continuously through a temperature sensor (RTD probe), and when the detected temperature exceeds the safe operating threshold, the F2 code is triggered. This condition is categorized as either a clean runaway or a cooking runaway, meaning the fault can occur during a self-clean cycle or during normal baking and broiling operations.

A clean runaway occurs when the oven temperature during a self-clean cycle climbs beyond the expected range, which typically operates at very high temperatures to incinerate food residue. If the control board or temperature sensor fails to properly regulate or read the heat level during this cycle, temperatures can spike to dangerous levels. A cooking runaway follows the same logic but occurs during standard cooking modes, where the oven exceeds normal operating temperatures due to a faulty sensor, a stuck relay on the control board, or a malfunctioning temperature limiter.

The primary components involved in this fault are the oven temperature sensor, the electronic oven control board, and the oven safety thermostat or thermal limiter. A failed sensor may send inaccurate resistance readings to the control board, causing the board to continue heating the oven unchecked. Alternatively, a relay on the control board can stick in the closed position, keeping the bake or broil element energized regardless of the actual cavity temperature.

Source: manufacturer service documentation.

Common causes of F2

  1. 01

    Faulty oven temperature sensor

    Part replacement

    The RTD temperature sensor probe may be reading incorrectly, causing the control board to lose accurate temperature feedback and allowing the oven to overheat. A failed sensor often reads outside its normal resistance range at room temperature.

  2. 02

    Stuck relay on the control board

    Part replacement

    A relay on the electronic oven control board can stick in the closed position, keeping the bake or broil element powered continuously regardless of the set temperature. This causes uncontrolled temperature rise and triggers the F2 fault.

  3. 03

    Self-clean cycle temperature runaway

    Wiring / connection

    If the F2 code appeared during a self-clean cycle, the oven may have exceeded the expected high-heat range for that mode. This can result from a combination of a marginal sensor and a control board that cannot regulate the cycle properly.

  4. 04

    Failed oven safety thermostat or thermal limiter

    Part replacement

    The thermal limiter is a backup safety device designed to cut power when temperatures reach a critical level. If this component has failed open or is not functioning, it may not properly interrupt the circuit, contributing to a runaway condition.

  5. 05

    Wiring fault in the temperature sensor circuit

    Wiring / connection

    Damaged, shorted, or corroded wiring between the temperature sensor and the control board can cause erratic temperature readings, leading the control board to misread oven conditions and trigger an F2 fault.

See the test procedure for each cause

Frequently asked questions about F2

What does F2 mean on a Jenn-Air range?
The F2 code on a Jenn-Air range means the oven has detected an excessive cavity temperature condition. This is classified as either a clean runaway, occurring during a self-clean cycle, or a cooking runaway, occurring during normal oven use. The oven shuts down as a safety measure when the temperature exceeds safe operating limits. The most common causes are a faulty temperature sensor or a stuck relay on the control board.
Is it safe to use my Jenn-Air range when it shows an F2 error?
No, you should not continue using the oven while the F2 error is active. This code indicates the oven reached dangerously high temperatures and the condition that caused it has not been resolved. Using the oven before diagnosing and repairing the underlying fault could result in further damage to components or create a fire hazard.
Will resetting the Jenn-Air range clear the F2 error code?
Resetting the range by cutting power at the breaker for a few minutes may temporarily clear the F2 code, and the oven may appear to function normally afterward. However, if the root cause, such as a faulty temperature sensor or a failing control board relay, has not been repaired, the error will return. A reset is useful for confirming whether the fault is intermittent, but it is not a permanent fix.
How do I fix an F2 error on a Jenn-Air range?
Start by inspecting the oven temperature sensor probe for visible damage and check its resistance with a multimeter to confirm it is within the correct range. If the sensor tests faulty, replacing it is the most common repair. If the sensor is good, the electronic oven control board should be inspected for signs of a stuck relay or burn marks. Depending on the findings, the repair will involve replacing either the sensor, the control board, or the wiring in the sensor circuit.
How much does it cost to repair an F2 error on a Jenn-Air range?
Repair costs vary depending on the faulty component. A replacement oven temperature sensor typically costs between $20 and $60 for the part, making it the most affordable fix. A new electronic oven control board is considerably more expensive, generally ranging from $150 to $350 or more for the part alone. Adding professional labor costs will increase the total, so getting a diagnostic estimate before committing to a repair is advisable.

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