F21Warning
KitchenAid Dishwasher F21 Error Code
The dishwasher took too long to drain, often because of a partial blockage.
Common causes
- Clogged drain filter
- Kinked or blocked drain hose
- Failed drain pump
How to fix it
- Clean the filter assembly
- Straighten drain hose and ensure no blockage
- Check drain pump for debris
⚠ When to call a pro: If cleaning doesn't resolve, the drain pump may need replacement.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.