Dishwasher fills with water but spray arms do not move; dishes remain dirty; F4E3 or wash motor not running error appears.

Safety First: Disconnect power and turn off water supply before pulling the dishwasher out.

Basic checks:

• Listen at the start of the wash cycle: you should hear the motor start after filling. A loud hum with no water movement suggests a jammed pump; silence suggests no power or a failed motor.
• Remove the lower spray arm and filter assembly inside the tub. Check for broken glass, bones, or debris in the sump that could jam the impeller.

Access the circulation pump:

• Remove the lower access panel and slide the dishwasher out slightly.
• Locate the circulation pump assembly attached to the sump at the bottom center.
• Inspect the wiring connector for burns or looseness; reseat firmly.

Corrective action:

• If debris is found in the sump, remove it carefully and reassemble. Test the unit.
• If the motor still hums or does not run, the circulation pump assembly should be replaced as a unit (motor + housing) using the correct KitchenAid part.