Whirlpool Washer Error Code d21

The d21 code is the AccuTrac display equivalent of the F27 fault and indicates an overflow condition, meaning the washer detected water rising above the safe maximum level in the tub. The machine stops operation automatically to prevent water damage. Common causes include a blocked drain hose, a faulty water inlet valve, or a defective water level pressure switch.

No, you should not continue using the washer while d21 is active. The code indicates the tub water level exceeded a safe limit, which creates a real risk of water overflowing onto the floor and causing damage. Shut off the water supply and unplug the machine until the underlying cause is diagnosed and corrected.

Repair costs depend on which component is at fault. A replacement water inlet valve typically costs between $25 and $80 for the part, while a water level pressure switch generally runs between $15 and $50. Adding professional labor, total repair costs can range from $100 to $250 or more depending on your location and the technician's rates. If the drain hose is simply kinked, the fix may cost nothing at all.

Start by turning off the water supply faucets connected to the washer and unplugging the unit from the outlet. Next, inspect the drain hose for kinks, clogs, or improper positioning. If the drain hose is clear, the next step is to test the water inlet valve and the water level pressure switch, along with its connecting hose, for faults. Replacing the defective component should resolve the overflow condition.

Unplugging the washer and restoring power may temporarily clear the code, but d21 will return if the root cause has not been fixed. If the inlet valve is not closing properly or the drain hose remains blocked, the overflow condition will repeat during the next wash cycle. A reset should only be used after the actual fault has been identified and repaired.