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Error code reference

Maytag Washer Error Code F73

UIC microprocessor error

Maytag codesMaytag washer codes

UIC microprocessor error — UIC microprocessor is not able to read or verify EEPROM. Cycles and price display disabled until diagnostic code is manually cleared.

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 F73 means on a Maytag washer

The F73 error code on a Maytag washer indicates a UIC (User Interface Control) microprocessor fault, specifically a failure in reading or verifying the EEPROM (Electrically Erasable Programmable Read-Only Memory) chip embedded in the UIC board. The EEPROM stores critical configuration data, cycle settings, and operational parameters that the microprocessor must access to function correctly. When the microprocessor cannot read, write, or verify the integrity of this stored data, the control board triggers F73 to flag the communication breakdown.

As a direct result of this fault, the washer disables the cycle selection display and any pricing-related display functions until the code is manually cleared by a technician. This lockout behavior is intentional and prevents the machine from operating in an undefined state. The UIC board is the component responsible for all front-panel input processing, display output, and communication with the main control board, so a failure here effectively renders the control panel non-functional.

Common triggers for F73 include corrupted EEPROM data caused by power surges or sudden power interruptions during a write cycle, a failed or failing UIC board, and loose or damaged wiring connections between the UIC and other control components. In some cases, the error clears after a full power cycle if the EEPROM corruption was transient. Persistent F73 codes that return after clearing typically point to a defective UIC board requiring replacement.

Source: manufacturer service documentation.

Common causes of F73

  1. 01

    Transient EEPROM data corruption

    Wiring / connection

    A brief power surge, outage, or interruption during a write cycle can corrupt the EEPROM data temporarily. This type of corruption often clears after a full 2-minute power disconnect and restart.

  2. 02

    Failed UIC board

    Part replacement

    If the EEPROM or the microprocessor on the UIC board has failed permanently, the error will return immediately after clearing. A faulty UIC board cannot recover through power cycling and requires replacement.

  3. 03

    Loose or damaged wiring to the UIC

    Wiring / connection

    Intermittent or corroded connections in the wiring harness supplying the UIC board can cause unreliable communication and trigger EEPROM read failures. Inspect connectors at the UIC board for looseness, corrosion, or visible damage.

  4. 04

    Voltage irregularity at the UIC board

    Wiring / connection

    Unstable or incorrect supply voltage reaching the UIC board can interfere with EEPROM read and write operations. Checking supply voltage and ensuring the washer is on a dedicated, stable circuit can help rule this out.

See the test procedure for each cause

Frequently asked questions about F73

What does F73 mean on a Maytag washer?
F73 on a Maytag washer means the User Interface Control (UIC) microprocessor is unable to read or verify its internal EEPROM memory chip. This causes the washer to disable cycle selection and display functions as a precaution. The code must be manually cleared before the washer will operate again. If the error returns after clearing, the UIC board likely needs to be replaced.
Can I fix the F73 error myself without replacing parts?
In some cases, yes. The first step is to clear the error code, then unplug the washer or disconnect power for at least 2 minutes before reconnecting. After restoring power, attempt to start a cycle or enter diagnostic mode to verify whether the UIC is responding normally. If the error does not return, a transient power event was likely the cause and no parts are needed.
Will resetting the washer permanently clear the F73 error?
A reset will clear the code temporarily, but it will return if the underlying problem is an actual hardware failure on the UIC board. If the EEPROM data corruption was caused by a one-time power event, the reset may resolve the issue for good. Persistent or recurring F73 errors after power cycling indicate a defective UIC board that cannot be fixed through resetting alone.
Is it safe to use my Maytag washer while the F73 code is active?
No. When F73 is active, the washer intentionally disables cycles and display functions, meaning you cannot select or start a cycle through normal operation. The machine is designed to prevent use in this state until the code is cleared. Attempting to bypass this lockout is not recommended.
How much does it cost to repair a Maytag washer with the F73 error?
If the issue requires replacing the UIC board, repair costs typically range from around $150 to $350 or more depending on the specific model, parts availability, and whether you use a professional technician or source and install the board yourself. If the fix is simply a power reset with no parts needed, there is no parts cost, though a service call from a technician would still carry a diagnostic fee typically in the $75 to $150 range.

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