Dishwasher shows E22, often with poor washing results and dirty water remaining around the filter.

Safety first: Turn off the dishwasher before cleaning filters.

• Remove and clean filters: Take out the coarse and fine filters from the bottom of the tub. Rinse under warm running water and scrub gently with a soft brush.
• Inspect sump: Look into the sump opening for food particles, labels, or foreign objects. Remove anything visible.
• Check filter seating: Reinstall the filters correctly, ensuring they lock into place. Misaligned filters can allow debris into the pump.
• Run a hot cycle: Run an intensive program to flush the system. Use a dishwasher cleaner if there is heavy grease buildup.
• Monitor: If E22 continues despite clean filters, there may be a deeper blockage in the sump or drain path requiring professional service.