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Kenmore dishwasher not draining: what to check first

You open the Kenmore dishwasher and find dirty water sitting in the bottom of the tub. It may smell bad, leave grit on dishes, or ignore the cancel drain command. This page walks through the safe checks first, then the parts a technician tests when it still won't drain.

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Straight answer

A Kenmore dishwasher that won't drain usually means water is being blocked before it reaches the household drain, or the drain pump isn't moving it out. A common first cause is food, grease, or debris clogging the filter and sump area.

Check these first

Safe to do yourself. Unplug the appliance before you start.

  1. Run cancel drain and let it finish

    Start a cycle, then press and hold cancel or start for the drain cancel function if your model uses that control. Let it run its full drain period, often about 2 minutes, before opening the door. If the cycle was interrupted or the restriction is light, this may move enough water to let you clean the filter safely.

  2. Remove standing water before pulling the filter

    Use a cup, sponge, towels, or a wet vac to get the dirty water out of the tub. If there is loose food or broken glass in the water, wear gloves and lift it out with tongs or a scoop so it doesn't drop into the pump when the filter comes out.

  3. Clean the filter and the sump well

    Pull the lower rack. Many Whirlpool-built Kenmore models use a round filter that turns counterclockwise, while older styles may have flat mesh screens under the lower spray arm. Wash greasy mesh with hot water and a toothbrush, then look down in the sump for pasta, labels, seeds, broken glass, or the black gunk techs see all the time.

  4. Check the garbage disposal connection

    Run the disposal with water at the sink. If the disposal was recently replaced, unplug it or turn off its breaker before anyone checks the dishwasher inlet; the plastic knockout plug must be removed for the dishwasher to drain into it. On older installs, the short disposal nipple can pack solid with grease.

  5. Look for a kinked drain hose or missing high loop

    Under the sink, follow the dishwasher drain hose to the disposal, branch tailpiece, or air gap. It should rise to the air gap or high under the counter before dropping to the drain, and it should not be pinched in the visible cabinet area. A bad hose path can let sink water run back into the tub after the dishwasher stops.

  6. Check for suds from regular dish soap

    If the water is foamy, someone may have used hand dish soap or a pan with soap residue. Suds can interfere with normal pumping and can cause leaks or poor washing. Let the suds settle, remove as much water as you can, then run a rinse drain cycle with no detergent.

Dishwasher tub with the filter in the floor under the lower spray arm and the drain hose to the sinkFilter (twists out)Lower spray armDisposal or air gapDrain hose
The filter sits in the tub floor under the lower spray arm. Water leaves through the drain hose to the disposal or an air gap at the sink.
When it's a repair

If the filter, disposal port, and visible hose checks are clear, a technician usually tests the drain pump next, then the check valve or piston and nut assembly, then the drain hose, drain solenoid or diverter parts on older designs, and finally the control board or mechanical timer if the pump never gets power. Older belt driven Kenmore dishwashers can also have a worn pump belt, though that layout is less common. If the dishwasher is near the 8 to 10 year range and needs an electronic control plus pump or sump work, many techs would lean toward replacement, especially on a basic model with worn racks or prior leaks.

Models where this shows up most

Kenmore dishwashers were built by more than one maker, so the prefix matters. 665 models are Whirlpool-built and often share Whirlpool sump and filter layouts, 363 models are GE-built and may use a piston and nut drain part, 630 models are Bosch-built, 587 models are Frigidaire/Electrolux-built, and some LG-built 722 models may show an OE drain fault.

Have the model number ready

The company will ask for it first. It's on a sticker or metal plate, usually in one of these spots:

Where the model tag usually is on a dishwasher12
  1. Open the door: on the left or right edge of the tub or door
  2. Some models: on the top edge of the door
Worth knowing

Conditions that make this more likely

The house drain can be the real problem

Older homes often have narrow or partly blocked standpipes and drain lines. If the machine's own filter and hose are clear, the house drain is the next suspect, and that's a plumbing call rather than an appliance call.

Boards fail earlier in hot rooms

Electronics are rated for room temperature. In a garage or an unconditioned laundry room in summer, a control board can sit well above that for hours a day. Before replacing a board, a good technician confirms the parts it controls test good, since a shorted pump or valve can take out a new board too.

What a technician tests

Most likely part first. These are for a technician with a meter and the tech sheet, not a weekend project.

PartHow it's tested
Sump filter, chopper area, and drain portA technician removes the lower rack, spray arm, and sump cover as the model allows, often using a T15 bit on Whirlpool-built layouts. A failed visual check is packed mesh, black biofilm, glass in the sump, or debris at the pump inlet where water should feed the drain pump.
Drain hose and disposal inletThe hose is removed at the disposal or branch tailpiece and checked for flow, kinks, grease plugs, and a disposal knockout plug left in place. The common clog points are the disposal nipple, the branch tailpiece, and the hose end near that connection.
Drain pumpWith power removed, the pump is checked for a jammed impeller, swollen seal marks, or a stiff rotor. On an ohm meter, the pump motor should show a model specific winding resistance, not an open circuit or a dead short, and metal framed motors should show no continuity to ground; if it gets the proper voltage during drain but won't run, the pump is replaced.
Check valve flapper or piston and nut assemblyThe flapper at the pump outlet is checked for damage, food holding it shut, or debris propping it open. On models with a piston and nut assembly, the piston must move up and down without sticking, and the rubber seal must close tight in the down position or the dishwasher may drain poorly or refill with dirty water.
Control board, timer, or drain solenoid circuitIf the pump is good and the drain path is clear, the tech checks for power at the pump connector during the drain step and follows the tech sheet if there is no output. Mechanical timer models are checked against the wiring diagram for the drain contacts and timer motor; don't use a generic resistance value.

Don't see your symptom?

Describe it on the phone. The company on the other end works on these every day and will know what to ask.

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Common questions about appliance repair

Will resetting a Kenmore dishwasher fix a drain problem?

A reset or cancel drain can help if the control was stuck mid-cycle or the pump needed one more drain command. If water still sits in the tub after the drain period, treat it like a clog or failed drain part.

Why did it stop draining after a new garbage disposal was installed?

The usual miss is the disposal knockout plug still sitting inside the dishwasher inlet. The dishwasher hose can be attached correctly and still have nowhere to send water if that plug wasn't removed.

Should I remove the filter while the tub is full of water?

Remove as much water and loose debris as you can first. Pulling the filter with dirty water still covering it can let food, glass, or seeds fall into the pump area.

How do I know if my Kenmore is Whirlpool-built or GE-built?

Open the door and read the model tag on the tub frame or door edge. The first three digits tell the builder family, such as 665 for many Whirlpool-built models and 363 for many GE-built models.

What if the drain pump makes no noise at all?

No pump sound can mean a dead pump, a jammed rotor, or no power being sent to the pump. After the clog checks, a technician will test the pump and then the control or timer output.

Still showing the problem after the checks?

Call and describe what you tried. You'll be connected with an independent repair company near you.

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