Dishwasher has a bad smell even after completing a cycle.

Safety first: No electrical work is required; just ensure the machine is off.

Step-by-step checks:

• Clean filters and sump: Remove all filters and scrub them with hot soapy water. Wipe the sump area to remove sludge.
• Clean spray arms: Remove spray arms and flush them thoroughly to remove trapped food.
• Door seal and edges: Wipe the door gasket and inner door edges with a mild bleach solution or dishwasher cleaner.
• Check drain connection: Ensure the drain hose has a high loop and is not allowing sink water to backflow into the dishwasher.
• Run hot cleaning cycle: Run an empty cycle at the hottest temperature with a dishwasher cleaner or a cup of white vinegar placed upright on the top rack.

Repeat cleaning regularly to prevent odors from returning.