Unpleasant odor coming from the dishwasher, especially when opening the door after it has been closed for a while.

Safety first: No electrical work is required; ensure the unit is cool before cleaning.

• Clean filters and sump: Remove and scrub filters. Wipe out the sump area and door edges with hot soapy water.
• Run cleaning cycle: Run an empty cycle with a dishwasher cleaner or a cup of white vinegar on the top rack, followed by a baking soda rinse cycle.
• Improve drainage: Ensure the drain hose has a proper high loop and no sags that trap water.
• Leave door ajar: After cycles, leave the door slightly open to allow ventilation and prevent stale odors.