Water remains in the bottom of the dishwasher between cycles; slow seep back into tub.

Safety First: Turn off power before modifying drain connections.

• Inspect drain hose routing: Ensure the hose rises to a high loop under the countertop or connects to an air gap before going to the sink or disposer.
• Check sink drain: Clear any clogs in the sink or disposer that could cause water to back up into the dishwasher.
• Check valve: Some Whirlpool models have a check valve in the drain outlet or hose. Inspect and replace if stuck open.