Dishwasher Not Draining Completely
Water remains in the bottom of your dishwasher after the cycle ends.
Common Symptoms
- 1Standing water in bottom of dishwasher
- 2Water backup during cycle
- 3Foul odor from dishwasher
- 4Dishes not getting clean
- 5Error code indicating drain problem
Possible Causes
Clogged filter or drain
Most CommonFood debris and hard water deposits block the drain path.
Garbage disposal blockage
Most CommonDishwasher drains through the disposal. A clogged disposal backs up the dishwasher.
Air gap or high loop issue
Most CommonImproper installation or clogged air gap prevents proper drainage.
Kinked drain hose
PossibleThe drain hose is bent or compressed, restricting water flow.
Drain pump failure
PossibleThe pump that forces water out has failed.
Control board issue
Less CommonElectronics not signaling the drain pump to activate.
DIY Troubleshooting Steps
Before starting: Always ensure your safety first. Unplug the appliance when working near electrical components. For gas appliances, turn off the gas supply if you smell gas.
- 1
Clean the filter
Remove and thoroughly clean the filter. Clear any visible debris from the drain area.
- 2
Run the garbage disposal
If your dishwasher drains through the disposal, run it with water to clear any blockages.
- 3
Check the air gap
If installed, remove the air gap cover and clear any debris. Clean with a brush.
- 4
Inspect the drain hose
Pull the dishwasher out slightly to check for kinks in the drain hose. Straighten if needed.
- 5
Verify high loop
The drain hose should loop up near the countertop before going to the disposal. This prevents backflow.
- 6
Listen for drain pump
During the drain cycle, listen for the pump running. No sound may indicate pump failure.
When to Call a Professional
Contact a professional technician if any of the following apply:
- !Drain remains clogged after clearing filter and disposal
- !Drain pump is not running
- !Drain hose needs replacement
- !Error codes indicate pump or electronic issues
- !Recurring drainage problems despite cleaning
Prevention Tips
- Clean filter weekly
- Run disposal before starting dishwasher
- Scrape large food particles before loading
- Run dishwasher regularly to prevent drain line buildup
- Monthly cleaning cycle with dishwasher cleaner