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Kitchen

Why Is My Dishwasher Not Draining?

If your dishwasher is not draining, check whether the cycle ended, then look for suds, sink trouble and a filter you can safely remove.

An open dishwasher has cloudy standing water at the bottom, with its lower rack on the floor and a folded towel on the door in a bright kitchen.
Where a pro takes overPart of this is work for a licensed trade. This guide covers what you can safely do yourself and marks exactly where to stop.

Start with where the water sits

The quick read
  • Food debris, too many suds, and a restricted hose or sink drain can leave water behind.
  • Some water may be normal. Compare it with your model's normal level before treating it as a fault.
  • Confirm the cycle finished, then use your model's cancel or drain control.
  • Check for foam and a slow sink before cleaning an owner-removable filter.
  • If excess water remains after those checks, book appliance service.

You open the door expecting clean dishes and find water instead. We'd check where the water sits and whether the cycle finished first, because either answer can change what you need to do next.

StopStop using the dishwasher if it's leaking, the water keeps rising, sewage is backing up, you smell burning, or you see damaged wiring or a tripped breaker. Don't keep resetting a breaker that trips. Never step into standing water to reach a plug or switch. If you can't turn the power off from somewhere dry, call an electrician to do it.

Water on the floor rather than in the tub is a different problem. Our guide to fixing a leaking dishwasher starts from where the wet spot is.

The normal amount depends on the filter. On GE dishwashers with an Ultra-Fine filter, water sitting in the filter well is normal, but it shouldn't cover the bottom of the tub. On GE models without that filter, 1 to 2 cups of clean water across the bottom is normal. For another design, use its model guidance before treating retained water as a fault. If that normal amount is all that's left after a finished cycle with no error, there's nothing to fix.

  1. Look at the water. If it's confined to the filter well, compare it with your model's normal level. If it covers the tub floor, check whether the cycle finished.
  2. Read the display before pressing anything, and photograph any error. If the cycle paused, resume it using your controls. If it ended, use the model's cancel or drain control and watch whether the water level falls.
  3. Look for foam. If you see suds, turn the dishwasher off and let them dissipate before running anything. If there are no suds, check the sink and air gap.
  4. Check whether the kitchen sink drains normally, water spills from an air gap, or the problem began after installation work. Those results point to a plumber or installer. If the sink is clear, move to the filter.
  5. Disconnect power and clean only a filter your model lets you remove. After the next normal cycle, more water than your model's normal level means it's time to book appliance service.
An open dishwasher has cloudy standing water at the bottom, with its lower rack on the floor and a folded towel on the door in a bright kitchen.

Why water gets stuck in the tub

Food debris in a filter or pump area, too many suds, and a restricted or wrongly routed drain hose can all leave water behind. A new disposer can block the drain if its dishwasher-inlet plug was left in place.

The display, suds, sink and an owner-removable filter are yours to check. Leave hose connections, the pump, controls, wiring and panels to an installer, plumber or appliance technician. If you own a Maytag, our Maytag dishwasher checks follow that brand's won't-drain symptom.

Check the cycle, then try the drain control

Opening the door can pause a cycle, so first check the display and whether the machine is waiting to resume. If the cycle has ended, find the cancel or drain control for your model, close the door as directed and let it finish. A falling water level tells you the machine can pump water out. If a lot remains, check the sink and filter next.

Buttons differ even within a brand, so match these to your model. GE GDP615HSMSS owners can download the manual (opens in a new tab) for the exact steps.

Examples of model-dependent controls and filters
Dishwasher exampleCancel or drain controlFilter access
Bosch models with Reset 4 Sec.Hold Reset 4 Sec. or Start for about four seconds to pump out residual water.Use the model instructions to remove the filter.
LG models with CANCEL & DRAINLook for CANCEL & DRAIN on the control panel; button combinations vary.On LG's twist-out mesh filter, turn the filter counterclockwise and rinse it under running water with a soft brush.
Samsung models with a hold-to-cancel Start controlHold Start for three seconds to cancel the cycle.Some models have removable filter-area parts; follow the instructions for yours.
GE GDP615HSMSSTo resume a paused cycle, press Start and close the door within four seconds. To cancel and drain, hold Start for three seconds and close the door.Its cylindrical Ultra-Fine filter twists out; a separate mesh plate is held by retaining posts. Don't use a brush on the Ultra-Fine filter.

Heavy foam changes the plan. Turn the dishwasher off and let the suds die down before you run anything, because too many suds can stop it draining properly. Use dishwasher detergent when you run it again.

Keep chemical drain cleaner out of the dishwasher. It can damage dishwasher parts.

What the kitchen sink tells you

Your dishwasher drains into the same plumbing as your kitchen sink. We'd check that path before blaming the dishwasher, especially if the trouble began after a new disposer or dishwasher went in.

Two under-sink views of a dishwasher drain hose: one with a high loop under the counter, one routed through an air gap beside the faucet.
Without an air gap the drain hose needs a high loop under the counter; with one it connects through the air gap beside the faucet. Both then drain past the sink connection.Original illustration by HouseTuned
What you can seeWhat the result means and what to do
The sink drains slowly or backs upThe shared drain needs attention. Call a plumber before testing the dishwasher again.
Water comes out of the air gap by the faucetThe drain path past the air gap needs checking. Call a plumber to inspect it.
Trouble began after a new dishwasher or disposer went inInstallation is the first place to look. Ask the installer to check hose routing and the disposer's dishwasher-inlet knockout plug.
A drain hose you can see is kinkedThe visible kink may restrict draining. Photograph it for the installer or technician; leave the dishwasher and hoses where they are.
The sink drains normallyThe dishwasher hose or its connection may still be restricted. Move on to the removable filter.

Clean the filter your dishwasher lets you remove

Many removable filters twist free, but some filter parts sit behind a fastened cover and some machines have no owner-removable parts. We'd start with the parts designed to lift out by hand. A fixed grille or a part that won't move needs the model's instructions before you go further.

Common filter arrangements
What you findWhat to do
A twist-lock filter, sometimes with a lower filter beneath itAfter disconnecting power, turn and lift the removable filter as directed for your model. Rinse it and seat every part correctly.
A filter or grille held by fastenersLeave it in place until you have the model's removal instructions. Some designs require a screwdriver.
No removable filter-area partsLeave fixed parts in place. Clean only visible, safely reachable debris and continue with the other drain checks.

On Whirlpool's two-piece design, the upper filter twists out before the lower one lifts free; the filter removal steps (opens in a new tab) show the reassembly order. LG's removable mesh design can be cleaned under running water with a soft brush. For another machine, match the method to its filter before using a brush. Our guide to cleaning a dishwasher covers the other parts you can maintain.

  1. Disconnect the dishwasher from its power supply. Switching it off at the controls doesn't cut the power. Give it time to cool after a cycle, because the heating element can burn you (GE says at least 20 minutes).
  2. Pull out the bottom rack and look at the filter area. If you see broken glass or can't reach the filter safely, stop and book service. Don't feel around in cloudy water.
  3. Remove only the filter parts your model allows you to lift or turn out. Rinse them with water, using a soft brush only where that filter's instructions allow it.
  4. Put every removable part back in its proper position and lock it in place. Don't run the dishwasher with a filter missing or loose, because debris can get into the pump.
  5. Reconnect power and watch the next normal cycle. If excess water remains after it finishes, stop running cycles and book appliance service.

When water comes back between uses

Water that never drained and water that shows up later are different clues. Dirty water building up between uses can point to a drain hose that wasn't installed properly.

Leave the hose where it is and have an installer or plumber check its routing. Note whether the returning water is dirty or clear, and when you first saw it.

Humming, errors and the service decision

A hum or an error code gives a technician a useful clue. A blocked filter, hose or pump area can all leave water in the tub, so record the sound or code and let the technician confirm the fault before any part is ordered.

If the sink drains normally but excess water remains after the drain command and filter check, book appliance service. Check your warranty or service plan first. Have the full model number, proof of purchase, error photo and a note of what you've checked ready when you book.

For budgeting, Whirlpool's repair service estimated $200–$450 for an out-of-warranty dishwasher repair, including parts and labor, based on service data from six US cities in 2020. Current prices may be higher. Ask for the local diagnostic fee and a written estimate for your job.

Questions that come up after the checks

Can the dishwasher drain be blocked if the sink is clear?

Yes. A restriction or routing problem in the dishwasher's own drain hose can still hold water back. If the filter is clean and excess water remains, book appliance service.

What if the filter won't twist free?

Leave it in place and use the removal instructions for your model. Some filters have fasteners, and some filter-area parts aren't removable.

Does a humming sound mean I need a new pump?

Record when the hum happens and whether the water level falls. Have a technician check the drain path and confirm any part before you order one.

How do I tell whether cleaning the filter worked?

Run the next normal cycle with the filter locked in place. When it finishes, compare the remaining water with your model's normal level.

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HouseTuned covers household appliances and everyday kitchen how-tos, maintenance and home systems, starting with observable symptoms and practical checks.

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