Symptoms
- Small bits of food stuck to dishes that were previously clean areas
- Debris visible in the bottom of glasses
- Filter looks dirty or hasn't been cleaned in a long time
- Problem affects most or all dishes in a load, not just one spot
Likely causes
- CommonClogged or improperly seated filterA full or loose filter lets debris recirculate through the spray arms instead of trapping it.
- CommonFilter missing or removedIf the removable filter was taken out for cleaning and not reinstalled, nothing traps debris.
- CommonNot scraping large food scraps before loadingDishwashers are designed for light residue, not large scraps, bones, or seeds.
- PossibleWorn check valve or drain pathA worn valve can let dirty wash water linger and recirculate instead of clearing between phases.
What to do
- Remove the bottom rack and check that the filter assembly is actually installed and twisted/locked into place.
- Clean the filter thoroughly under running water, using an old toothbrush to remove trapped debris from the mesh.
- Scrape large food scraps, bones, and seeds into the trash before loading dishes; a light rinse isn't usually necessary otherwise.
- Reinstall the filter fully seated and locked, per your model's instructions.
- Run a hot cycle with a dishwasher cleaner to flush out any debris already stuck in the wash system.
- If food debris keeps recirculating with a clean, properly installed filter, have a technician check the drain valve.
Tools and parts
- Old toothbrush
Dishwasher filter assemblySearch: “dishwasher filter replacement”
When to call a pro
If the filter is clean and properly seated but debris still recirculates, an appliance technician can check the drain valve and wash system.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.