Maytag Washer Error Code d12/F25

The d12/F25 code is a tachometer error indicating the Motor Control Unit cannot properly detect the drive motor's speed. When this signal is lost or falls outside acceptable parameters, the washer shuts down to prevent damage. Common causes include a broken drive belt, faulty wiring, a failed tachometer sensor, or a defective MCU or motor.

No, you should not continue running the washer while this code is active. The washer shuts itself down when this fault occurs because uncontrolled or undetected motor speed can cause mechanical damage or create unsafe operating conditions. Address the underlying cause before resuming normal use.

Clearing the error code is the recommended first diagnostic step, but it will not fix the underlying problem. If the mechanical or electrical fault causing the tachometer error is still present, the code will return as soon as the washer attempts to run. A reset only clears stored fault data so you can test whether the issue persists after inspection and any repairs.

Some causes of this code are DIY-friendly. After unplugging the washer, you can inspect the drive belt for breaks and check wiring harness connectors for looseness or corrosion. If the belt is broken, replacing it is a moderate DIY repair. However, diagnosing and replacing the MCU or drive motor typically requires more advanced electrical testing and is better handled by a qualified technician.

Repair costs depend on the faulty component. A replacement drive belt is generally an inexpensive part, with the full repair costing roughly $50 to $150 including labor. Wiring harness repairs fall in a similar range. Replacing an MCU or drive motor is more expensive, typically ranging from $150 to $400 or more depending on parts and labor rates in your area.