Whirlpool garbage disposal causes water to back up into the dishwasher.

Safety first: Turn off power to both the disposal and dishwasher.

• Inspect dishwasher inlet: Remove the dishwasher drain hose from the Whirlpool disposal and check for food debris blocking the inlet.
• Clean disposal: Run the disposal with water to clear any blockage at the discharge.
• Check hose routing: Ensure the dishwasher drain hose has a proper high loop or air gap above the sink level to prevent backflow.
• Flush hose: Rinse or replace a clogged or kinked dishwasher drain hose.