IP Tech Repairs

What to Do When Your Dishwasher Isn’t Draining

Feb 16, 2026

  Finding a pool of dirty water at the bottom of your dishwasher at the end of a cycle is frustrating. Before you call for repair, there are several simple steps you can take to identify the cause. Here is a quick guide to troubleshooting a dishwasher that won’t drain.

1. Check the Filter

The most common cause of drainage issues is a clogged filter. Food particles, broken glass, or labels from jars can block the flow.

What to do: Remove the bottom rack, unscrew the filter (usually a cylindrical part), and rinse it thoroughly under hot water.

2. Inspect the Garbage Disposal

Your dishwasher and sink usually share the same drain path. If your disposal is full of food, the dishwasher water has nowhere to go.

What to do: Run your garbage disposal for 30 seconds to clear any debris.

3. Clear the Air Gap

If you have a small chrome cylinder on your sink (the air gap), it might be clogged.

What to do: Pop off the cap and check for any buildup. A simple blockage here can prevent the dishwasher from pumping out water.

4. Check the Drain Hose

Look for kinks or clogs in the hose that connects your dishwasher to the drain.

What to do: Ensure the hose isn't pinched under the cabinet.

Conclusion: If you’ve checked these areas and your dishwasher is still holding water, the issue might be a faulty drain pump or a failed motor.

Need professional help?

IP Tech Repairs offers same-day dishwasher repair in Sherman Oaks and throughout the San Fernando Valley.

Call +1(747)767-1814 today!