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Error code reference

Jenn-Air Microwave Error Code F3E3

Meat probe shorted (sensor failure).

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Meat probe shorted (sensor failure).

First step from the service manual

Verify temperature reading on sensor in Diagnostic Mode; check STATUS SCREEN then OVEN SENSORS for dashes or Out of Range.

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

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What F3E3 means on a Jenn-Air microwave

The F3E3 error code on a Jenn-Air microwave indicates a shorted meat probe sensor. The meat probe is a temperature-sensing accessory that plugs into the microwave's probe jack and allows the unit to monitor the internal temperature of food during cooking. When the control board detects a short circuit condition in the probe circuit, it triggers F3E3 and halts probe-assisted cooking operations. A shorted probe means the circuit is reading an abnormally low resistance value, which the control interprets as a sensor failure rather than a valid temperature signal.

The probe system consists of the physical meat probe, the jack/receptacle it connects to inside the microwave cavity, and the wiring that carries the signal back to the control board. A short can occur at any point in this circuit. The most common failure point is the probe itself, particularly at the connector tip or along the cable if it has been pinched, melted, or damaged by heat exposure inside the cavity. The probe jack inside the cavity can also develop a short if food debris or moisture bridges the contacts internally.

To begin diagnosing this fault, enter Diagnostic Mode and navigate to the STATUS SCREEN, then select OVEN SENSORS. If the probe temperature reading shows dashes or an Out of Range indication, this confirms the sensor circuit is not returning a valid signal. Start by removing the meat probe entirely and checking whether the error clears. If the fault persists without the probe connected, the problem likely resides in the probe jack or the wiring between the jack and the control board rather than the probe accessory itself.

Source: manufacturer service documentation.

Common causes of F3E3

  1. 01

    Damaged or failed meat probe

    Part replacement

    The probe cable or connector tip has developed an internal short, often due to heat exposure, kinking, or physical damage. Inspect the cable along its entire length for melted insulation, pinch marks, or visible damage at the connector.

  2. 02

    Probe not fully seated or removed during error check

    Wiring / connection

    A partially inserted probe can create an intermittent or shorted connection at the jack. Remove the probe completely and re-enter Diagnostic Mode to see if the fault clears before assuming a component failure.

  3. 03

    Contaminated or corroded probe jack

    Wiring / connection

    Food splatter, grease, or moisture inside the probe receptacle can bridge the contacts and create a short. Inspect the jack opening for debris and clean carefully with a dry cloth or compressed air.

  4. 04

    Failed probe jack or internal wiring

    Part replacement

    If the error persists after the probe is fully disconnected, the probe receptacle itself or the wiring harness between the jack and the control board may have an internal short requiring replacement.

  5. 05

    Control board fault

    Part replacement

    In rare cases, the control board's probe sensing circuit can fail internally, causing it to report a short even when the probe and jack test as good. This is typically diagnosed only after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about F3E3

What does F3E3 mean on a Jenn-Air microwave?
F3E3 indicates a shorted meat probe sensor circuit. The control board has detected an abnormal low-resistance condition in the probe system, which it interprets as a sensor failure. The code disables probe-assisted cooking and requires diagnosis of the probe, the probe jack, or the associated wiring before the function can be restored.
Can I fix F3E3 myself on a Jenn-Air microwave?
Some causes of F3E3 are DIY-friendly. Start by removing the meat probe and inspecting it for visible cable damage or a damaged connector tip. If the probe appears damaged, replacing it with a compatible probe accessory is a straightforward fix. Cleaning debris from the probe jack is also something most homeowners can do safely. However, replacing the probe jack or diagnosing the control board requires disassembling the microwave and working near high-voltage components, which should be done by a qualified technician.
Is it safe to use my Jenn-Air microwave while F3E3 is displayed?
F3E3 specifically affects the meat probe cooking function, so standard microwave cooking without the probe attached should not be impacted by this fault. However, you should not use the probe cooking feature until the issue is resolved, as a shorted probe circuit will prevent accurate temperature monitoring and could lead to undercooked food. If the error appears without a probe connected, have the unit inspected before continued use.
Will resetting my Jenn-Air microwave clear the F3E3 error code?
A power reset may temporarily clear the F3E3 code, but it will return if the underlying fault in the probe circuit is still present. If the error was triggered by a fully inserted probe that had shifted slightly or by a transient connection issue, a reset combined with reseating the probe might resolve it. For an actual shorted probe cable or a faulty jack, the physical cause must be corrected before the code will stay clear.
How much does it cost to repair a Jenn-Air microwave showing F3E3?
If the meat probe accessory itself is shorted, replacement probe cost typically falls in the range of $20 to $60 depending on the model. If the probe jack or internal wiring requires replacement, repair costs including parts and labor can range from $100 to $250. Control board replacement, the most expensive scenario, can range from $200 to $400 or more with professional installation. Getting a diagnostic assessment first helps determine whether repair is cost-effective compared to replacement.

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