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Error code reference

Maytag Washer Error Code F74

UI EEPROM not programmed or corrupted

Maytag codesMaytag washer codes

UI EEPROM not programmed or corrupted - the User Interface identification does not match the expected value in the Main Control Board.

First step from the service manual

Fault occurs during Service Diagnostic Test Mode (UI Diagnostics test).

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

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What F74 means on a Maytag washer

The F74 error code on a Maytag washer indicates a mismatch or failure in the User Interface (UI) EEPROM. EEPROM stands for Electrically Erasable Programmable Read-Only Memory, which is a type of non-volatile memory that stores configuration and identification data on the UI control board. When the washer powers on or runs through its initialization sequence, the Main Control Board checks the identification value stored in the UI EEPROM against the expected value. If this value is missing, corrupted, or does not match what the Main Control Board expects, the F74 fault is triggered.

This fault is confirmed during the Service Diagnostic Test Mode, specifically within the UI Diagnostics test. This test is designed to verify communication integrity and proper identification between the User Interface board and the Main Control Board. A failed UI Diagnostics test pointing to F74 narrows the root cause directly to the UI board's EEPROM data or to a communication breakdown between the two control boards.

The most likely causes are a corrupted or blank UI EEPROM, an incompatible or incorrect replacement UI board installed on the machine, or a UI board that has suffered electrical damage. In some cases, a failed communication connection between the UI and Main Control Board can prevent the identification data from being read correctly, mimicking an EEPROM fault. Resolving this error typically requires either replacing the User Interface board or, in cases of wiring or connector faults, restoring proper electrical continuity between the two control assemblies.

Source: manufacturer service documentation.

Common causes of F74

  1. 01

    Corrupted or blank UI EEPROM

    Part replacement

    The EEPROM chip on the User Interface board may have lost its programmed data due to a power surge, electrical spike, or component failure. This is the most common cause and results in the Main Control Board receiving no recognizable identification value from the UI board.

  2. 02

    Incorrect or incompatible UI board installed

    Part replacement

    If the User Interface board was previously replaced with an incompatible part number or a board programmed for a different model, the identification value stored in its EEPROM will not match what the Main Control Board expects. Verify that the installed UI board is the correct part for the specific model.

  3. 03

    Failed or damaged User Interface board

    Part replacement

    Physical or electrical damage to the UI board can cause the EEPROM or surrounding circuitry to malfunction, preventing the identification data from being transmitted correctly. Inspect the board for signs of burning, corrosion, or damaged components.

  4. 04

    Loose or damaged wiring between UI board and Main Control Board

    Wiring / connection

    A poor connection, damaged connector, or broken wire in the harness linking the User Interface board to the Main Control Board can interrupt communication, causing the identification data to be unreadable. Inspect all connectors and wiring in this circuit for damage, corrosion, or looseness.

  5. 05

    Main Control Board failure

    Part replacement

    In less common cases, the Main Control Board itself may be faulty and unable to properly read or process the identification signal from the UI board, even when the UI board is functioning correctly. This is typically considered after the UI board and wiring have been ruled out.

See the test procedure for each cause

Frequently asked questions about F74

What does F74 mean on a Maytag washer?
The F74 code means the Main Control Board cannot recognize the identification data stored in the User Interface board's EEPROM memory chip. This indicates either that the UI board's memory is corrupted or blank, or that the installed UI board is not compatible with the Main Control Board. The fault is confirmed through the UI Diagnostics test in Service Diagnostic Test Mode. The washer will not function normally until the mismatch is corrected.
Can I fix the F74 error myself or does it require a technician?
A knowledgeable DIYer can address this fault by first inspecting and reseating all wiring connectors between the User Interface board and the Main Control Board. If the wiring is intact, the most likely fix is replacing the User Interface board with the correct, compatible part for your specific model. If replacing the UI board does not clear the fault, the Main Control Board may also need to be replaced, which adds complexity and cost to the repair.
Is it safe to use the washer with an F74 error code?
You should not attempt to run normal wash cycles while this fault is active. The F74 code signals a failure in the control system communication, which means the washer may not respond to commands correctly or may behave unpredictably. Discontinue use until the fault has been diagnosed and resolved.
Will resetting the washer clear the F74 error code?
A simple reset, such as unplugging the washer and restoring power, will not permanently clear the F74 code. Because this fault is tied to a hardware condition, specifically a missing or corrupted EEPROM identification value, the code will return as soon as the washer goes through its initialization sequence again. The underlying cause must be corrected to clear the fault.
How much does it cost to repair an F74 error on a Maytag washer?
Repair costs vary depending on which component needs to be replaced. A User Interface board typically ranges from around 80 to 200 dollars for the part alone, while a Main Control Board can range from 150 to 350 dollars or more. If you hire a technician, labor costs will add to these figures, generally bringing total repair costs to somewhere between 150 and 500 dollars depending on the parts required and local service rates.

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