Dishwasher Not Draining? Here’s What to Check First

If your dishwasher is not draining, leaves water at the bottom, or finishes the cycle with standing water, the problem is often caused by a clogged drain hose, bad drain pump, blocked filter, or faulty check valve. This repair help page explains the most common causes and helps you find the right replacement part fast.

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Common Symptoms

Water sitting at the bottom of the dishwasher
Dishes not fully clean due to standing water
Drain cycle runs but water remains
Foul odor from trapped water
Dishwasher not completing cycle properly

Most Common Causes

Clogged drain hose – debris can block water flow out of the dishwasher.
Bad drain pump – prevents water from being pumped out.
Blocked filter or sump area – food particles can restrict drainage.
Faulty check valve – allows water to flow back into the tub.
Garbage disposal blockage – if connected, can prevent proper drainage.

Most Common Fix: Clean or Replace the Drain Pump

If your dishwasher is not draining at all, the drain pump is one of the most common failure points. Cleaning out debris or replacing a faulty pump can restore proper drainage.

Find Your Drain Pump

Quick Things to Check Before Replacing Parts

Clean the dishwasher filter and sump area
Check the drain hose for clogs or kinks
Make sure garbage disposal knockout plug is removed
Inspect for debris blocking the pump
Listen for pump operation during drain cycle

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