Maytag Washer Error Code d4

The d4 code means the control board has detected a fault in the motor relay control circuit and cannot determine the exact cause. The fault could be a relay stuck in the on position, a shorted relay drive circuit, or a failed relay feedback circuit. As a result, the washer disables cycle selection and the price display until the error is manually cleared using the P-01 procedure.

A manual clear via P-01 will remove the d4 code and restore normal display and cycle functions, but if the underlying fault is still present, the code will return. A reset is most useful as a first diagnostic step to determine whether the fault is persistent or intermittent. Permanent resolution requires identifying and repairing the failed component in the relay circuit.

Repair costs vary depending on the failed component. If the problem is a loose or corroded connector, the fix may cost little to nothing beyond your time. Replacing a control board typically runs in the range of $150 to $350 or more for parts alone, plus labor if you use a technician. Getting a precise diagnosis before ordering parts will help avoid unnecessary costs.

Start by clearing the code manually using the P-01 procedure on your washer. If the code returns immediately without running a cycle, the issue is likely a shorted drive circuit or failed feedback path on the control board. If it returns only during operation, the motor relay itself may be stuck or failing. Depending on what you find, the fix may involve reseating connectors, replacing the motor relay, or replacing the control board.

The washer disables cycle selection when d4 is active, so normal operation is blocked as a precaution. This is because the control cannot confirm the motor relay's state, which could theoretically allow the motor to run unexpectedly. It is best to clear the code and diagnose the fault before resuming regular use.