Dishwasher drain troubleshooting

Dishwasher Not Draining? Check the Filter and Hose First

Usually, a dishwasher that will not drain is blocked before the pump: dirty filter, sump debris, kinked hose, or a sink-side clog. If Cancel/Drain leaves water over the filter, clean the sump and confirm the hose route before pricing a pump.

A good clue is where the water stops. Standing water around the filter points inside the tub; water at the air gap or sink points outside the machine.

Work from the tub outward: water level, filter, hose, air gap or disposal, then pump sound.

Don’t start with: Do not use chemical drain cleaner or reach into the sump with power on. Order a drain pump only after the filter, hose route, air gap, and sink connection are clear and the pump still will not move water.

Water high in the tub?Stop running cycles. Remove enough water to reach the filter, then turn power off before cleaning the sump.

Water at the air gap or sink?Open the sink-side path first: air gap, disposal inlet, tailpiece, hose end, and slow sink drain.

Do this first

Stop running cycles if the water level rises, leaks onto the floor, or backs up at the sink.
Turn power off before reaching into the filter, sump, or lower access area.
Remove standing water with a cup, towel, or wet/dry vacuum before working in the tub.
Use gloves or a towel around broken glass, sharp labels, seeds, bones, and metal fragments.
Put a towel or shallow pan under any hose connection before loosening a clamp.
Do not pour chemical drain cleaner into the dishwasher or drain hose path.
Leave power off and call service if you smell burning, see melted wiring, or the breaker trips.

Last reviewed: 2026-06-30

60-second drain sort

Is water only below the filter cup?

A small puddle below the filter can be normal on some models. Run one cancel-drain or short rinse, then judge the level again.

Does water cover the tub bottom?

Power off, remove the lower rack, clean the filter, and look into the sump for labels, glass, seeds, or food debris.

Did this start after disposal or sink work?

Go under the sink first. The disposal inlet may be blocked, the hose may have moved, or the hose end may be packed with debris.

Does water spit from the air gap or back up at the sink?

Treat the sink-side drain path as the lead clue: air gap, hose to disposal, tailpiece, or a slow sink drain.

Is the path clear but the pump only hums or stays quiet?

Pump diagnosis moves up the list after the visible drain route is clear. Stop before live electrical work or guess-and-buy parts.

Follow the water from the tub to the sink

The first useful split is simple: water stopped inside the dishwasher, under the sink, or at the air gap. Each spot sends you to a different repair path.

Dishwasher filter and sump area being cleaned after standing water failed to drain — Start inside the tub. Debris around the filter can restrict flow before water ever reaches the hose.

Under-sink dishwasher drain hose with a low sag that can hold dirty water — Trace the hose under the sink. A sharp kink, crushed section, or low sag can stop a good dishwasher from emptying.

Countertop dishwasher air gap with the cap removed and debris inside — If water spits from the air gap or debris is visible under the cap, clean the air-gap body and hose to the disposal before blaming the wash tub.

Before you buy anything

Copy the full model number from the door edge or tub frame before comparing parts. A filter belongs in the cart only if it is damaged or will not lock in place. A hose belongs there only if it is split, collapsed, permanently kinked, or blocked beyond cleaning. A drain pump comes later, after the visible drain route is clear and the pump behavior actually points there.

Jump to: Tools You May Need · Replacement Parts

What is probably happening

Start with the standing-water clue. If debris is packed around the filter, clean the sump; if the tub is clear but water backs up at the air gap or sink, move under the sink before testing the pump.

Filter or sump debris: dirty water sits around the filter because food, labels, seeds, glass, or grease block the opening before the hose ever matters.
Hose restriction: a crushed hose, sharp bend, low sag, or sludge-packed end can slow the discharge even when the tub parts are clean.
Air gap or disposal restriction: water at the countertop air gap, disposal inlet, or sink tailpiece means the dishwasher may be doing its job but has nowhere to send water.
Slow sink drain: run water in the sink; if it pools or gurgles while the dishwasher tries to drain, clear the sink-side path before buying dishwasher parts.
Pump trouble: a jammed or weak drain pump becomes more likely only after the filter, sump, hose, air gap, disposal inlet, and nearby sink drain look clear.

What not to do

Set a shallow pan under the hose connection, switch power off, and open the filter, air gap, or hose end that matches the symptom. If water backs up at the sink, clear that connection before touching dishwasher parts.

Do not pour chemical drain cleaner into the dishwasher, hose, air gap, or disposal connection.
Do not keep running full cycles when water is already high in the tub.
Do not order a drain pump from a hum alone; first remove filter debris, check the hose end for sludge, and confirm the air gap or disposal inlet is clear.
Do not push screwdrivers, wire, or sharp tools into hidden sump openings.
Do not loosen hose clamps without a towel or shallow pan under the connection.
Do not pull the dishwasher out unless power is off, water is controlled, and you have room to move it without damaging the floor or hose.

Step-by-step fix

Work from the least invasive area to the harder one. A good clue at any step can stop the repair path before it turns into pump shopping.

Step 1: Press Cancel/Drain or run one short rinse if the cycle was interrupted. If the water drops to a small puddle below the filter cup, compare that with your manual before chasing a failure.
Step 2: Turn power off. Remove the lower rack, lift out the filter if your model has a removable one, and rinse grease and debris from the screen.
Step 3: Look into the sump opening with a flashlight. Pick out loose labels, seeds, glass, bones, or food pieces by hand or with a towel; do not force tools into hidden parts.
Step 4: Restore power for a short drain attempt only after the tub area is clear. Watch whether water moves strongly, barely moves, or stays put.
Step 5: Trace the drain hose under the sink. Straighten a kink, lift a low sag if your layout allows it, and make sure stored items are not crushing the hose.
Step 6: Clean the air gap if you have one. If the hose enters a garbage disposal, inspect the inlet and hose end; after a recent disposal install, verify the dishwasher inlet is open.
Step 7: Once the visible drain route is clear, listen again. A steady rush means the blockage was likely external; a weak hum, harsh grind, or silence moves the repair toward pump diagnosis or service.

Read the drain result

The drain attempt tells you more than the part list. Watch the hose end, air gap, sink, and tub level at the same time if you can do that without reaching into moving or energized parts.

What you see	What it usually means	Next move
Water stays below the filter cup.	Often normal residual water, especially after a completed cycle.	Compare with the manual and run a short rinse before taking parts apart.
Water covers the tub bottom after Cancel/Drain.	The restriction may be at the filter, sump, hose, or sink-side connection.	Power off, clean the filter and sump, then follow the hose.
Water spits from the air gap.	The hose from air gap to disposal or sink drain is likely blocked.	Clean the air gap and downstream hose before blaming the dishwasher.
Sink drains slowly too.	The shared drain may be restricted.	Fix the sink drain or call a plumber before buying dishwasher parts.
Strong drain sound but no water leaves.	A hose end, disposal inlet, or tailpiece may still be blocked.	Inspect the under-sink connection and any recent plumbing work.
Weak hum, grind, or silence after everything is clear.	The pump or its electrical path may need diagnosis.	Stop before live electrical work and match parts only by exact model.

Tools You May Need

These tools support cleanup and inspection. They are not a reason to open electrical covers, reach into moving parts, or pull the dishwasher out before the simple drain path is clear.

Inspection flashlight

Helps when: You need to see the filter cup, sump opening, under-sink hose route, air gap, or model tag without guessing in a dark cabinet.

Skip it when: The next step would require exposed wiring, live electrical testing, or pulling the dishwasher where you cannot control the hose and floor.

Compare inspection flashlights on Amazon

Towels and shallow pan

Helps when: You plan to loosen a hose clamp, air-gap hose, or tailpiece and need to catch dirty water before it reaches the cabinet base.

Skip it when: The connection is seized, leaking heavily, or you are not comfortable putting the drain plumbing back together leak-free.

Compare towels and drain pans on Amazon

Wet/dry vacuum

Helps when: Standing water covers the filter area and you need to lower the level before cleaning the sump or looking for debris.

Skip it when: You smell burning, see electrical damage, or the floor is actively flooding; control the hazard and call service instead.

Compare wet/dry vacuums on Amazon

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What to write down before service

Good notes keep the repair from turning into guesses. A technician or parts counter can do more with exact symptoms than with a broad no-drain complaint.

Full model number from the door edge, tub frame, or side label.
How high the water sits after Cancel/Drain.
Whether the filter was packed, cracked, warped, or missing.
Whether water spits from the air gap or backs up into the sink.
Whether the dishwasher started acting up after disposal, sink, or hose work.
Whether the pump makes a steady rush, weak hum, harsh grind, click, or no sound.
Any leak, breaker trip, hot smell, or water damage around the cabinet base.

Replacement Parts

Compare parts after the symptom points somewhere specific. Dishwasher filters, hoses, and pumps are model-specific, and a part that looks close can still have the wrong locking tabs, end fitting, connector, or pump housing.

Dishwasher filter

Helps when: The filter is cracked, warped, missing, or will not lock after cleaning, and debris is getting past the screen into the sump area.

Skip it when: The filter is only dirty and seats firmly after cleaning; a new filter will not clear a blocked hose or sink-side restriction.

Compare dishwasher filters on Amazon

Dishwasher drain hose

Helps when: The hose is split, brittle, crushed, permanently kinked, or still blocked after removal and cleaning at the accessible end.

Skip it when: The hose route was simply sagging or pinched and drains normally after you straighten it and secure the connection.

Compare dishwasher drain hoses on Amazon

Dishwasher drain pump

Helps when: The visible drain path is clear, but the pump still hums weakly, grinds, leaks, or fails testing.

Skip it when: There is still visible debris, a slow sink drain, air-gap overflow, or an unverified hose/disposal restriction; a pump will not fix those.

Compare dishwasher drain pumps on Amazon

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FAQ

Why is there still water in the bottom of my dishwasher?

A little water below the filter cup can be normal on some dishwashers. Water spread across the tub bottom after a completed cycle points more toward a dirty filter, sump debris, blocked hose, sink-side restriction, or pump trouble.

Should I run the dishwasher again if it did not drain?

Try one Cancel/Drain or short rinse only if the water is not rising and there is no leak risk. Stop if the level climbs, the sink backs up, water reaches the floor, or you smell anything hot.

Can a garbage disposal make a dishwasher not drain?

Yes. Check the disposal inlet knockout or plug and the hose connection under the sink. If the no-drain problem started right after disposal work, that connection is the first place to inspect.

What does water coming from the air gap mean?

Water from the air gap usually means the downstream hose or sink-side connection cannot carry the discharge away fast enough. Clean the air gap and the hose from the air gap to the disposal or sink drain.

Can I use drain cleaner in a dishwasher drain hose?

No. Chemical drain cleaners can damage dishwasher parts, hoses, seals, and nearby plumbing. Clean the filter, sump, air gap, and accessible hose ends manually instead.

Does a hum mean the dishwasher drain pump is bad?

Not automatically. A hum can come from debris near the impeller or a blocked hose. The pump becomes a better target only after the filter, sump, hose, air gap, disposal inlet, and sink drain are clear.

How do I know if the dishwasher drain hose is clogged?

A hose that feels packed, holds dirty water in a low sag, has a blocked sink-side end, or keeps the tub full after the filter is clean deserves attention. Use a towel and shallow pan before loosening any clamp.

Do I have to pull the dishwasher out to fix draining?

Usually no. Remove the lower rack, clean the filter and sump, then inspect the hose end under the sink. Pull the dishwasher only when those access points are clear and the remaining hose or pump access is unreachable.

What if the kitchen sink drains slowly too?

Treat the sink drain as part of the evidence. A slow sink, backed-up disposal, or clogged tailpiece can make the dishwasher look broken even when the machine is pumping water correctly.

Which part should I consider first?

A filter only makes sense if it is damaged or will not seat. A hose only makes sense if it is split, collapsed, or blocked beyond cleaning. A pump belongs last, after the visible drain route is proven clear.

Where is the dishwasher model number?

Open the door and look along the tub frame, door edge, or side label. Use the full model number before ordering a filter, drain hose, pump, or any part tied to a specific dishwasher layout.

When should I call a pro for a dishwasher that will not drain?

Call service for burning smell, melted wiring, breaker trips, repeated leaking, water damage under cabinets, a seized connection you cannot reassemble, or any repair that requires energized electrical diagnosis.

How this guide was built

Repair Riot built this page around the visible drain path: tub water level, filter and sump debris, hose route, air gap or disposal connection, sink behavior, and pump sound. The sources below informed public drain, filter, air-gap, and disposal-connection guidance; your model manual still wins for exact access steps.

GE Appliances dishwasher does not drain — public guidance on drain hose routing, sink drain, air gap, disposal plug, and service boundaries.
GE Appliances cleaning your dishwasher air gap — air-gap cleaning and overflow context.
GE Appliances disposer dishwasher connection — disposal inlet and knockout-plug context after disposal installation.
GE Appliances dishwasher filter cleaning — filter cleaning and debris guidance.