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Error code reference

Whirlpool Washer Error Code F74

UIC EEPROM error

Whirlpool codesWhirlpool washer codes

UIC EEPROM error — EEPROM memory is a CRC failure (cycles and price display disabled until diagnostic code is manually cleared). Also washer UIC failure.

First step from the service manual

Clear error code, unplug washer or disconnect power, wait 2 minutes before reconnecting power, verify UIC by attempting to start a cycle or run diagnostic mode.

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 Whirlpool washer

The F74 error code on a Whirlpool washer indicates a CRC (Cyclic Redundancy Check) failure in the EEPROM memory of the User Interface Control (UIC). EEPROM stands for Electrically Erasable Programmable Read-Only Memory, and it stores critical configuration data, cycle settings, and operational parameters for the control board. A CRC failure means the stored data has become corrupted or cannot be read correctly, causing the control system to flag a fault condition. As a direct result of this fault, the washer disables cycle selection and the price display until the diagnostic code is manually cleared.

The UIC is the primary board responsible for accepting user input, displaying information, and communicating operating commands to the rest of the machine. When the EEPROM on this board fails a CRC check, the washer cannot trust the integrity of its stored data and locks out normal operation as a protective measure. This failure can occur due to a corrupted memory write caused by a power surge or brownout, gradual degradation of the EEPROM chip itself, or an outright failure of the UIC board.

Diagnosis begins by manually clearing the error code, then disconnecting power for a minimum of 2 minutes before reconnecting. After restoring power, attempt to start a cycle or enter diagnostic mode to verify whether the UIC is functioning correctly. If the F74 code returns immediately or the board does not respond as expected, the UIC board itself is the likely point of failure and will need to be replaced.

Source: manufacturer service documentation.

Common causes of F74

  1. 01

    UIC Board Failure

    Part replacement

    The User Interface Control board itself may have failed, causing the EEPROM to consistently produce CRC errors. If the F74 code returns immediately after clearing and power cycling, the UIC board is the primary suspect.

  2. 02

    EEPROM Data Corruption from Power Surge

    Wiring / connection

    A voltage spike or brownout during a wash cycle can corrupt the data stored in the EEPROM memory. This is a common trigger for a one-time CRC failure that may clear after a proper power reset.

  3. 03

    Intermittent Power Supply Issue

    Wiring / connection

    Unstable or insufficient power to the UIC can cause repeated EEPROM write failures over time. Check the outlet voltage and the washer's power cord for damage or loose connections.

  4. 04

    Degraded EEPROM Memory Chip

    Part replacement

    EEPROM chips have a finite number of read/write cycles, and an aging or degraded chip may begin failing CRC checks even without an external cause. This typically results in recurring F74 codes despite successful resets.

  5. 05

    Loose or Damaged UIC Wiring Connection

    Wiring / connection

    A loose harness connector or damaged wire leading to the UIC board can interrupt communication and contribute to memory errors. Inspect all connectors at the UIC board for corrosion, damage, or incomplete seating.

See the test procedure for each cause

Frequently asked questions about F74

What does F74 mean on a Whirlpool washer?
F74 indicates a CRC failure in the EEPROM memory on the User Interface Control board. The EEPROM stores cycle and configuration data, and when that data fails its integrity check, the washer disables cycle selection and the display until the code is manually cleared. It can be caused by a power surge, a failing UIC board, or gradual EEPROM degradation.
Will resetting the washer clear the F74 error code?
Manually clearing the code and then unplugging the washer for at least 2 minutes can clear the F74 error if it was triggered by a temporary power event or data corruption. However, if the UIC board itself has failed, the code will return as soon as the washer powers back up. A persistent F74 after multiple resets points to a hardware failure requiring board replacement.
How do I fix the F74 error on my Whirlpool washer?
Start by manually clearing the error code, disconnecting power for 2 minutes, and then reconnecting power to attempt a cycle or run diagnostic mode. If the code clears and the washer operates normally, the issue was likely a temporary memory fault. If the code returns, inspect the UIC wiring harness for loose or damaged connections, and if those are secure, the UIC board will need to be replaced.
Is it safe to keep using my washer when F74 is displayed?
The washer automatically disables cycle operation when F74 is active, so it will not run in its faulted state. This is a protective lockout rather than a safety hazard, but you should not attempt to bypass the error or force the machine to operate. Resolve the fault before resuming regular use to prevent potential damage to the control electronics.
How much does it cost to fix a Whirlpool washer F74 error?
If the error clears with a simple power reset, there is no parts cost involved. If the UIC board requires replacement, parts alone typically range from roughly 80 to 200 dollars depending on the model, with additional labor costs if a technician is needed. Getting the error code to reproduce consistently before ordering parts will help confirm the UIC is the correct component to replace.

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