Dishwasher Not Draining? What the Standing Water Means

Quick note: This guide is educational and cannot replace hands-on diagnosis. Stop using any appliance that leaks near electricity, smells like gas, smokes, sparks or overheats.

A small amount can be normal

Some dishwashers retain a little clean water below the filter to keep seals moist. Water covering the tub floor, carrying food debris or producing an odor is different and deserves attention.

Clean the accessible filter

Remove the lower rack and follow the manual for filter removal. Rinse away food and glass carefully. Do not reach into a pump opening or force parts that do not release easily.

Think about the sink connection

A kinked drain hose, clogged air gap or newly installed disposal with an unopened knockout can stop drainage. If the kitchen sink is also slow, a plumbing restriction may be part of the problem.

When the pump needs testing

A drain pump may hum without moving water, run loudly or stay silent. Voltage and resistance tests should be performed safely. Controls and door latches can also prevent the machine from reaching the drain portion of the cycle.

Prevent repeat problems

Scrape large food particles, keep the filter clean and use the detergent amount recommended for local water conditions. Too much detergent can leave residue that looks like a cleaning or drainage failure.

Make the service call more productive

Before calling, photograph the model-and-serial label and write down the exact symptoms. Include when the issue occurs, whether an error code appears and what changed immediately before the failure. Avoid dismantling safety-critical or high-voltage parts. Good information is more useful than a box of parts replaced by guesswork.