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Error code reference

Maytag Dryer Error Code dM

Dryer motor control circuit error; cycles and price display disabled until diagnostic code is manually cleared

Maytag codesMaytag dryer codes

Dryer motor control circuit error; cycles and price display disabled until diagnostic code is manually cleared. The control cannot determine if the motor relay is stuck on, the motor relay drive circuit is shorted, or the motor relay feedback circuit is bad.

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What dM means on a Maytag dryer

The dM error code on a Maytag dryer indicates a motor control circuit fault. Specifically, the main control board has detected an abnormal condition in the motor relay circuit but cannot isolate the exact failure point. The control is designed to monitor three distinct failure modes: a motor relay that is stuck in the closed (on) position, a short circuit within the motor relay drive circuit, or a fault in the feedback circuit that reports relay status back to the control board. Because the control cannot distinguish between these three conditions, it flags the general dM fault and disables all cycle and price display functions until the code is manually cleared.

The motor relay is a critical component on the control board that switches power to the drive motor. When the control board commands the relay to open or close, it simultaneously checks the feedback signal to confirm the relay responded correctly. If the feedback signal disagrees with the commanded state, or if the drive circuit shows an unexpected current condition, the board interprets this as a dM fault. This protective behavior prevents the motor from running in an uncontrolled state, which could cause overheating or mechanical damage.

Common root causes include a failed relay on the control board itself, damaged wiring or connectors in the relay drive or feedback circuit, or a control board with a shorted driver component. Because the three fault conditions all point back to the relay circuit and its associated board components, the control board is frequently the source of the problem. Wiring harness integrity between the board and motor should also be evaluated before condemning the board outright.

Source: manufacturer service documentation.

Common causes of dM

  1. 01

    Failed motor relay on the control board

    Part replacement

    The relay responsible for switching power to the drive motor may have failed in a stuck-on position or have a damaged coil. This is the most common source of the dM fault and typically requires control board replacement.

  2. 02

    Shorted motor relay drive circuit

    Part replacement

    A short circuit within the drive circuit on the control board can cause the board to misread relay status and trigger the dM code. This condition is usually internal to the board and not repairable without board replacement.

  3. 03

    Faulty motor relay feedback circuit

    Part replacement

    If the circuit that reports relay status back to the control board is damaged or sending incorrect signals, the board will log a dM fault even if the relay itself is functioning. Inspect board connectors and traces for signs of damage or corrosion.

  4. 04

    Damaged wiring harness or connectors

    Wiring / connection

    Loose, corroded, or chafed wiring between the control board and the drive motor can disrupt both the drive signal and the feedback signal. Inspect the full harness path for visible damage, and check connector pins for corrosion or pushed-back terminals.

  5. 05

    Faulty main control board

    Part replacement

    If all wiring and connections check out correctly, the control board itself may have an internal component failure affecting the relay driver or feedback circuitry. Board replacement is the typical resolution in this scenario.

See the test procedure for each cause

Frequently asked questions about dM

What does dM mean on a Maytag dryer?
The dM code indicates a motor control circuit error. The control board has detected a fault in the motor relay circuit but cannot determine whether the relay is stuck on, the relay drive circuit is shorted, or the relay feedback circuit is bad. As a safety response, the dryer disables all cycle selections and display functions until the code is manually cleared.
Can I fix the dM error code myself?
Some basic checks are within reach for a knowledgeable DIYer, including inspecting wiring harness connectors between the control board and motor for corrosion or damage. However, if the fault lies within the relay drive or feedback circuit on the control board, board replacement is typically required and is best handled by a qualified technician. Attempting to bypass or ignore the fault is not recommended.
Is it safe to keep using my dryer when the dM code is showing?
No. The dryer disables cycle and display functions specifically to prevent the motor from operating in an uncontrolled state. Running the dryer with a motor relay fault could lead to overheating or further component damage. The dryer should remain out of service until the fault is properly diagnosed and repaired.
Will resetting the dryer clear the dM error code?
The dM code must be cleared manually through the diagnostic mode rather than through a simple power cycle. Even after clearing the code, if the underlying fault in the motor relay circuit is not corrected, the code will return when the control detects the condition again. Clearing the code is a diagnostic step, not a repair.
How much does it cost to repair a Maytag dryer dM error code?
Repair costs depend on which component has failed. If the problem is a damaged wiring harness or connector, costs may be relatively low, generally in the range of $50 to $150 for parts and labor. If the main control board requires replacement, total repair costs including labor typically range from $200 to $450 depending on the specific model and local labor rates.

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