Maytag Washer Error Code d21

The d21 code means the washer has detected an overflow condition. Specifically, the overflow contact on the pressure switch has been closed for more than 60 seconds, which tells the control board that water has risen above the safe fill level and is not receding. The washer stops operation to prevent flooding.

No, you should not continue running the washer with an active d21 error. The code indicates a potential uncontrolled water overflow, which can lead to water damage inside the machine or on your floor. Disconnect power and address the underlying cause before operating the washer again.

Clearing or resetting the error code may allow the washer to restart temporarily, but the d21 fault will return if the underlying cause has not been fixed. Resetting is a useful first step in the diagnostic process, not a repair. Until the faulty inlet valve, pressure switch, or related component is corrected, the overflow condition will persist.

Start by clearing the error code, then unplug the washer and disconnect the electrical connectors from both the hot and cold water inlet valves. This isolates the valves and helps determine if one is allowing water to enter when it should not. You should also inspect the pressure switch air hose for kinks or blockages. If a faulty inlet valve or pressure switch is confirmed, that component will need to be replaced.

Repair costs vary depending on the failed component. A water inlet valve typically costs between $20 and $80 for the part, while a pressure switch generally falls in the $15 to $60 range. If you hire a technician, expect to add labor costs on top of parts. A control board replacement, if needed, is significantly more expensive.