Dishwasher has a bad odor even when empty.

Safety first: Turn off power before removing internal parts.

• Clean filters and sump: Remove and scrub filters with hot soapy water. Clean the sump area thoroughly.
• Run cleaning cycle: Use a dishwasher cleaner or a cup of white vinegar on the top rack and run a hot cycle.
• Flush drain hose: Detach the drain hose at the sink and flush with hot water to remove sludge.
• Use hot cycles regularly: Run a hot or sanitize cycle periodically to reduce biofilm buildup.