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

This drain pump assembly actively removes wastewater from the dishwasher at the end of each cycle. Replacing a failing pump restores proper draining, helps prevent standing water, and supports clean, odor-free performance.

• Pumps water out of the tub through the drain hose to the household drain
• Helps prevent water from backing up into the tub between cycles
• Common symptoms: won't drain/standing water, humming or buzzing during drain, intermittent draining, or leaking around the pump area
• Restores reliable end-of-cycle draining

• Disconnect power and turn off water supply before servicing
• Remove lower access panel; place a towel or pan to catch residual water
• Note wire and hose positions; transfer clamps and reconnect hoses securely to prevent leaks
• Inspect drain hose, air gap, and disposer/sink inlet for blockages before testing