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Error code reference

Jenn-Air Oven Error Code F8

Shorted meat probe alarm.

Jenn-Air codesJenn-Air oven codes

Shorted meat probe alarm.

First step from the service manual

Check probe jack or harness to probe jack. Check if probe is sensing temp above 250°F.

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

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What F8 means on a Jenn-Air oven

The F8 error code on a Jenn-Air oven indicates the control board has detected a short circuit in the meat probe circuit. Specifically, the board is reading a resistance value that corresponds to a temperature above 250°F from the probe or its associated wiring before cooking has even begun, or under conditions where that reading is not physically plausible. The diagnostic path leads to the probe jack, the wiring harness running to that jack, and the probe itself as the primary suspects. A shorted circuit here sends a false high-temperature signal to the board, which triggers the alarm.

For homeowners, the meat probe is the temperature-sensing accessory you plug into the oven's interior jack to monitor the internal temperature of roasts or other meats during cooking. When the oven's control board sees a signal from this circuit suggesting an impossibly high or erroneous temperature, it throws the F8 code to prevent a false reading from affecting your cook cycle. The problem is most often a damaged probe, a faulty connection at the jack inside the oven cavity, or a wiring issue between the jack and the control board. In many cases, simply removing or replacing the probe resolves the error immediately.

Source: manufacturer service documentation.

Common causes of F8

  1. 01

    Meat probe plugged in or physically damaged

    Part replacement

    A bent, corroded, or internally shorted meat probe can send a false resistance reading to the control board. Removing the probe from the jack is the first check; if the code clears, the probe itself is the likely culprit.

  2. 02

    Damaged or corroded probe jack

    Part replacement

    The probe jack inside the oven cavity is exposed to heat, grease, and moisture over time. Corrosion or physical damage to the jack's contacts can create a short circuit even when no probe is inserted, continuously triggering the F8 code.

  3. 03

    Faulty wiring harness to the probe jack

    Part replacement

    The wiring harness connecting the probe jack to the control board can develop shorts from heat exposure, pinching, or insulation breakdown. A shorted harness will send an erroneous signal to the board regardless of probe condition.

  4. 04

    Failed control board

    Part replacement

    If the probe, jack, and harness all test good with no visible damage and correct resistance, the control board itself may be misinterpreting the probe circuit signal due to internal component failure.

See the test procedure for each cause

Frequently asked questions about F8

What does the F8 error code mean on a Jenn-Air oven?
F8 on a Jenn-Air oven means the control board has detected a shorted meat probe circuit. The board is receiving a signal from the probe jack or its wiring that indicates a temperature above 250°F, which triggers the alarm. This can be caused by a damaged meat probe, a faulty probe jack, or a shorted wiring harness leading to that jack.
How do I fix the F8 error code on my Jenn-Air oven?
Start by unplugging the meat probe from the jack inside the oven cavity, then clear the code and see if it returns. If the code clears, replace the meat probe. If the code returns without any probe inserted, inspect the probe jack for corrosion or damage and check the wiring harness that runs from the jack to the control board. A damaged jack or harness will need to be replaced, and a technician can test the harness for continuity to confirm the fault location.
Can I still use my Jenn-Air oven when F8 is displayed?
In many cases the oven will still operate for standard baking and broiling functions, but you should not attempt to use the meat probe feature while the F8 code is active. The underlying short in the probe circuit means the oven cannot accurately read probe temperatures, and the fault should be resolved before relying on probe-based cooking. If the code is causing the oven to lock up entirely, the probe or jack issue needs to be addressed before further use.
How much does it cost to fix an F8 error on a Jenn-Air oven?
A replacement meat probe is typically the least expensive fix, usually between $20 and $60 depending on the model. A replacement probe jack or wiring harness will cost more in parts, generally $30 to $100, plus labor if a technician performs the repair. If the control board is the cause, that is the most expensive scenario, with board costs ranging from $150 to $400 or more. Diagnosing the fault yourself by removing the probe first can help you avoid unnecessary service costs.
Why does my Jenn-Air oven show F8 even when no probe is plugged in?
If F8 appears without a meat probe inserted, the short is occurring inside the probe jack itself or in the wiring harness that runs from the jack to the control board. Inspect the jack for visibly bent contacts, corrosion, or food debris that could be bridging the terminals. If the jack looks intact, the harness should be tested for a short to ground or between conductors. Either the jack or the harness will need to be replaced to resolve the code.

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