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Error code reference

Whirlpool Microwave Error Code F2-E0

Temperature sensor opened (R=2875 ohm by spec).

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Temperature sensor opened (R=2875 ohm by spec).

First step from the service manual

Disconnect power or unplug oven, check sensor connection, measure sensor resistance (1080 Ω at 70°F, add 2 Ω per degree F).

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

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What F2-E0 means on a Whirlpool microwave

The F2-E0 error code on a Whirlpool microwave indicates that the temperature sensor circuit has opened, meaning the control board is detecting an infinite or out-of-range resistance reading from the cavity temperature sensor. The sensor is a thermistor, a resistive device whose resistance changes predictably with temperature. At the design reference point, the sensor should read 2875 ohms. At a standard ambient temperature of 70 degrees Fahrenheit, the expected resistance is 1080 ohms, and resistance increases by approximately 2 ohms for each degree Fahrenheit above that baseline. When the control board reads a value far outside the expected range, or detects a completely open circuit, it triggers F2-E0 and halts operation.

The temperature sensor is used by the microwave's control system to monitor internal cavity heat. This protects against overheating and also supports cooking functions that rely on temperature feedback. An open sensor circuit means the control board cannot receive a valid temperature signal, which makes continued safe operation impossible. The fault is most commonly caused by a failed sensor, a damaged wiring harness connector, or broken wiring between the sensor and control board.

Diagnosing this fault requires disconnecting power to the unit before any inspection. With power removed, the sensor connector should be checked for corrosion, burning, or loose pins. A multimeter placed across the sensor terminals should read close to 1080 ohms at 70 degrees Fahrenheit if the sensor itself is intact. Readings that are infinite (OL on a multimeter) confirm an open sensor. Readings that deviate significantly from the temperature-adjusted expected value suggest a degraded sensor that should be replaced.

Source: manufacturer service documentation.

Common causes of F2-E0

  1. 01

    Failed temperature sensor (thermistor)

    Part replacement

    The thermistor itself has developed an internal open circuit and no longer conducts. This is confirmed by measuring infinite resistance across the sensor terminals with a multimeter when the expected reading at room temperature is approximately 1080 ohms.

  2. 02

    Loose or disconnected sensor connector

    Wiring / connection

    The wiring connector at the sensor or control board end may have vibrated loose or was not fully seated. Inspecting the connector and firmly reseating it can resolve the fault without replacing any parts.

  3. 03

    Burned or corroded sensor connector pins

    Part replacement

    Heat exposure or moisture inside the cavity can corrode or damage the connector pins, creating high resistance or an open in the circuit. Visible discoloration or corrosion on the pins indicates this cause.

  4. 04

    Damaged wiring harness

    Part replacement

    The wire lead between the temperature sensor and the control board may be pinched, cut, or broken. A continuity test along each wire in the harness will identify an open conductor.

  5. 05

    Faulty control board

    Part replacement

    If the sensor and all wiring test within specification, the control board's sensor input circuit may have failed, causing a false open reading. This is the least likely cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about F2-E0

What does F2-E0 mean on a Whirlpool microwave?
F2-E0 means the microwave's control board has detected an open circuit in the temperature sensor. The temperature sensor is a thermistor that should read approximately 1080 ohms at 70 degrees Fahrenheit and 2875 ohms at the design reference point. When the board reads an out-of-range or infinite resistance value, it triggers this code and stops operation to prevent unsafe conditions.
Can I fix the F2-E0 error myself?
Some cases are DIY-friendly, particularly if the fault is simply a loose wiring connector at the sensor. After unplugging the microwave, you can inspect and reseat the connector and measure the sensor resistance with a multimeter. If the sensor itself is open (reads OL or infinite resistance), replacing the thermistor is a straightforward repair for someone comfortable working inside a microwave. Always unplug the unit and allow capacitors to discharge before opening the cabinet.
Is it safe to use my Whirlpool microwave while the F2-E0 code is showing?
No, you should not use the microwave while this fault is active. The temperature sensor is part of the overheat protection system, and operating without a functioning sensor removes an important safety safeguard. The microwave will typically prevent operation when this code is present, and that lockout should be respected until the fault is resolved.
How much does it cost to repair the F2-E0 error on a Whirlpool microwave?
If only the temperature sensor needs replacement, parts typically cost between $15 and $50 depending on the model, and the repair is relatively quick. If a professional technician is needed, total costs including labor generally range from $80 to $200. A damaged wiring harness or failed control board will push repair costs higher, and in those cases it may be worth comparing the repair cost against the price of a replacement unit.
Will resetting the microwave clear the F2-E0 error code?
Unplugging the microwave and restoring power may temporarily clear the display, but the code will return as soon as the control board reads the sensor circuit again if the underlying fault has not been fixed. A reset does not repair a failed sensor or damaged wiring. The fault must be diagnosed and corrected before the error will stay cleared.

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