Dishwasher Not Draining
Water remaining in dishwasher after cycle
Common symptoms: Standing water, Slow drain, Drain pump noise
Common Symptoms
Standing water in bottom
Water visible in the bottom of the dishwasher after cycle completes.
Dirty water remaining
Murky or food-particle-laden water not draining.
Drain pump making noise but not draining
You hear the pump running but water remains.
Water backing up
Water from the dishwasher appearing in the sink.
Common Causes
Clogged filter
commonFood debris blocking the filter prevents drainage.
Blocked drain hose
commonKink or clog in the drain hose.
Garbage disposal connection blocked
commonIf connected to disposal, the drain port may be blocked.
Drain pump failure
moderateThe pump that expels water has failed.
Air gap blockage
moderateIf equipped, the air gap device may be clogged.
Check valve stuck
rareThe check valve preventing backflow is stuck.
DIY Troubleshooting Steps
Try these steps before calling for service. Many issues have simple solutions.
Clean the filter
Remove and thoroughly clean the filter assembly.
Check garbage disposal connection
If dishwasher drains through the garbage disposal, run the disposal to clear any blockage. For new installations, ensure the knockout plug was removed.
Inspect drain hose
Check for kinks in the drain hose. Ensure it maintains a high loop under the counter.
Clean air gap if present
Remove the cap from the air gap (usually on the sink) and clean out any debris.
Check for clogs in drain area
Look in the drain area at the bottom for debris blocking the drain.
When to Call a Professional
- Drain pump has failed
- Clogs you cannot reach or clear
- Check valve is stuck
- Problem persists after all DIY checks
- Water backing up into sink
Prevention Tips
Appliances Affected by Not Draining
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