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Error code reference

Maytag Washer Error Code 25

Motor tachometer signal present without torque command

Maytag codesMaytag washer codes

Motor tachometer signal present without torque command - motor tachometer signal present but motor is not running.

First step from the service manual

Clear diagnostic codes; possible line noise issue. If problem persists, replace motor control board.

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

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What 25 means on a Maytag washer

Error code 25 on a Maytag washer indicates the control board detected a failure in Rotary Switch 1, located to the left of the encoder, during the startup sequence. The encoder assembly uses multiple rotary switches to communicate drum position and cycle selection data to the main control board. When the board runs its startup self-check and fails to receive a valid signal from Rotary Switch 1, it throws this code and halts operation before the cycle begins. The fault is logged at startup, meaning the board caught the issue before any wash cycle progressed.

For homeowners, think of the rotary switch as one of several small sensors that tells the washer's brain where the cycle selector is positioned and confirms the machine is ready to run. When this specific switch fails or loses its connection, the washer cannot confirm its own starting state and refuses to operate. This is a protective measure that prevents the machine from running in an unknown or incorrect configuration. The fault does not typically indicate a catastrophic problem, but the washer will not complete a cycle until the underlying issue is addressed. The encoder assembly or its wiring harness are the most likely places to start investigating.

Source: manufacturer service documentation.

Common causes of 25

  1. 01

    Failed Rotary Switch 1 within the encoder assembly

    Part replacement

    The rotary switch itself can wear out or fail internally, producing no signal or an incorrect signal during the startup check. Because Rotary Switch 1 is built into the encoder assembly, replacing the entire encoder is typically required to resolve this.

  2. 02

    Damaged or loose wiring harness to the encoder

    Wiring / connection

    The wiring harness connecting the encoder assembly to the main control board can develop broken wires, corroded terminals, or loose connectors, causing the signal from Rotary Switch 1 to drop out. Inspecting and reseating or replacing the harness can resolve the fault without replacing the encoder.

  3. 03

    Faulty encoder assembly

    Part replacement

    If Rotary Switch 1 is part of a combined encoder unit, damage or failure elsewhere in the encoder can affect the switch's ability to function at startup. The entire encoder assembly may need replacement.

  4. 04

    Defective main control board

    Part replacement

    In less common cases, the main control board itself fails to correctly read the signal from Rotary Switch 1 even when the switch and wiring are functional. This is worth investigating only after confirming the encoder and harness are in good condition.

See the test procedure for each cause

Frequently asked questions about 25

What does error code 25 mean on a Maytag washer?
Error code 25 means the main control board detected a failure in Rotary Switch 1, which sits to the left of the encoder, during startup. The board runs a self-check before each cycle, and if it cannot get a valid signal from this switch, it stops the machine and displays the code. The encoder assembly or its wiring harness are the most likely sources of the problem.
How do I fix error code 25 on a Maytag washer?
Start by unplugging the washer for a few minutes and plugging it back in to see if the code clears as a one-time glitch. If code 25 returns, inspect the wiring harness connected to the encoder assembly for loose connectors, broken wires, or corrosion. Reseat any loose connectors and retest. If the code persists, the encoder assembly likely needs replacement, and a technician can confirm this with a diagnostic check.
Can I still use my Maytag washer when error code 25 is showing?
No, the washer will not run a cycle while error code 25 is active. The control board halts operation at startup when it cannot confirm a valid signal from Rotary Switch 1, so the machine will not progress past this fault. Continuing to try to force a cycle will not bypass the error.
How much does it cost to fix error code 25 on a Maytag washer?
If the fix is a loose or damaged wiring harness connector, the repair may cost nothing beyond your time. If the encoder assembly needs replacement, parts typically range from $30 to $80 depending on the model, with professional labor adding $100 to $200. Diagnosing the fault yourself before calling a technician can help you avoid paying for unnecessary parts.
Is error code 25 on a Maytag washer related to the encoder?
Yes, directly. The encoder assembly contains multiple rotary switches, and code 25 specifically points to Rotary Switch 1 on the left side of the encoder failing during startup. The encoder tracks cycle and drum position data for the control board, so a fault in one of its switches prevents the machine from operating safely.

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