Customer Questions and Answers for Drain Pump Assembly (Dishwasher) by Whirlpool

This dishwasher drain pump assembly actively removes wastewater from the tub and pushes it through the drain hose at the end of each cycle. Replacing a weak or failed pump restores proper draining and helps prevent standing water and odors.

• Pumps water out of the dishwasher during drain cycles and sends it through the drain hose to the sink/disposal
• Common symptoms: water left in the tub after a cycle
• Humming or buzzing from the pump with little/no water movement during drain
• Drains slowly, intermittently, or triggers a drain-related error
• Visible damage or a seized/broken impeller on the original pump

• Disconnect power and turn off water supply; protect the floor from spills
• Remove standing water and check the drain hose/sump for blockages before replacing the pump
• Access the pump from the base/front; release the lock (twist or tabs, per model) and transfer the wire connector
• Seat the new pump fully to seal; reconnect, then run a short cycle to check for leaks and proper draining