Dishwasher Not Draining? Causes, Fixes & 2026 Repair Costs

You opened the dishwasher expecting clean dishes and found a pool of dirty water sitting at the bottom. It's one of the most common appliance failures in American homes — and one of the easiest to misdiagnose. The good news: in roughly 60% of cases, the fix is free and takes under 20 minutes. The bad news: the other 40% range from a $180 pump replacement to a $450 drain hose and control board repair. This guide walks you through the exact diagnostic order professional appliance techs use, so you stop the water damage risk fast and avoid paying for repairs you don't need.

Before you call a plumber or appliance tech, work through this list in order. The first three causes account for roughly 70% of all calls in this category, and most are diagnosable in under 15 minutes by a homeowner with no special tools.

Work through these steps in order. Stop the moment one of them resolves the problem — don't keep going and risk creating a new issue. If you reach the end without success, the problem is in professional-repair territory and a licensed technician should be your next call.