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Error code reference

Whirlpool Washer Error Code F2E3

UI mismatch

Whirlpool codesWhirlpool washer codes

UI mismatch — the machine control or user interface ID do not match the expected values. This fault will stop the washer during Service Diagnostics Verification Cycle.

First step from the service manual

Verify that the ACU and UI part numbers are correct.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What F2E3 means on a Whirlpool washer

F2E3 is a communication mismatch fault. The Main Control Board has detected that the User Interface (UI) board connected to the machine does not match the control board's expected identification value. This typically surfaces during power-up or mid-cycle when the two boards exchange identification handshakes. The fault can result from an incompatible replacement UI board, a corrupted control board, or a wiring harness problem between the two components that causes the identification signal to read incorrectly.

In plain terms, your washer has two main electronic boards that need to recognize each other to work together. One controls the machine's operations and one runs the display and buttons you interact with. When the washer powers on, these boards introduce themselves electronically. F2E3 means the main board got an answer it did not expect from the display board, so it stopped the machine rather than run with mismatched instructions.

This error is most commonly seen after a repair where a replacement UI board with an incompatible part number was installed, but it can also appear due to wiring faults or a failing board. The first diagnostic step is TEST #4: Consoles and Indicators on page 16 of the service manual, which walks through verifying the UI board and its connections systematically.

Source: manufacturer service documentation.

Common causes of F2E3

  1. 01

    Incompatible or wrong-part UI board installed

    Part replacement

    If the User Interface board was recently replaced with a part that carries a different firmware version or model identification, the Main Control Board will reject it and trigger F2E3. Verify the replacement UI board part number exactly matches the one specified for your washer model.

  2. 02

    Damaged or loose wiring harness between UI and Main Control Board

    Wiring / connection

    A wiring harness that has a broken pin, loose connector, or damaged wire between the User Interface board and the Main Control Board can corrupt the identification signal, causing the main board to read an unexpected value and set F2E3. Inspecting and reseating or replacing the harness is part of the TEST #4 diagnostic process.

  3. 03

    Faulty User Interface board

    Part replacement

    A UI board that has failed internally may transmit a corrupted or incorrect identification value to the Main Control Board even if it is the correct part. TEST #4 in the service manual helps confirm whether the UI board itself has failed and needs replacement.

  4. 04

    Faulty Main Control Board

    Part replacement

    Less commonly, the Main Control Board itself may have failed in a way that prevents it from correctly reading or accepting the UI board's identification, even when the UI board and wiring are known good. This is typically confirmed only after the UI board and wiring harness have been ruled out.

See the test procedure for each cause

Frequently asked questions about F2E3

What does the F2E3 error code mean on a Whirlpool washer?
F2E3 means the Main Control Board detected that the User Interface board's identification does not match the value it expects. The two boards communicate an identification handshake when the washer powers on, and if the values do not match, the machine faults out. This is most commonly caused by a mismatched or failed UI board, or a wiring issue between the two boards.
How do I fix the F2E3 error code on my Whirlpool washer?
Start with TEST #4: Consoles and Indicators on page 16 of your washer's service manual. This test walks through checking the wiring harness connections between the User Interface board and the Main Control Board, and verifying the UI board itself. If the harness and connections are intact and the correct UI board is installed, the UI board or Main Control Board likely needs replacement. If a UI board was recently replaced, confirm the part number matches the one specified for your exact model.
Can I still use my Whirlpool washer with the F2E3 code showing?
No. F2E3 is a control communication fault that prevents the washer from operating normally. The machine will not complete a cycle because the Main Control Board and User Interface board are not able to work together in this state. Attempting to run the washer while this fault is active will not produce results, and the underlying mismatch needs to be resolved before the machine will function.
How much does it cost to fix the F2E3 error on a Whirlpool washer?
If the fix is simply reseating a loose wiring harness connector, there is no parts cost and a technician visit would typically run $75 to $150 for diagnosis and labor. Replacing a User Interface board generally costs $80 to $200 for the part depending on the model, plus labor if a technician does the work. A Main Control Board is typically the most expensive repair, with parts ranging from $150 to $350. DIY replacement of either board is feasible for someone comfortable with appliance repair, as both boards are accessible and bolt-in replacements.
Will resetting my Whirlpool washer clear the F2E3 error code?
A power reset may temporarily clear the fault display, but F2E3 will return as soon as the washer powers on and the Main Control Board runs its identification check again. The root cause, whether it is a mismatched UI board, a wiring harness issue, or a failed board, must be diagnosed and corrected. Follow TEST #4 in the service manual to identify the actual source of the mismatch.

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