Short answer
Stop the cycle and dry the floor quickly — water under a dishwasher can damage cabinets and subfloors. Leaks at the door usually come from a dirty or torn gasket, suds from the wrong detergent, or a unit that isn't level. Leaks from underneath usually involve a pump seal, hose, or the inlet valve.
Immediately
Act now
- Stop the cycle.
- Turn off the dishwasher's supply valve under the sink if water keeps coming.
- Dry the floor and the toe-kick area.
Possible causes, in the order they're usually ruled out
- DetergentHand-dish soap creates sudsYou can check
- Door gasketDebris or a tearYou can check
- LevelingWater runs to one cornerCheck, then technician
- Hoses & connectionsSupply or drain connectionTechnician
- Pump seal / inlet valveLeak underneathTechnician
Common causes
| Where | Likely cause |
|---|---|
| Door front | Gasket debris or damage, wrong detergent, overloading |
| Under the door corners | Unit not level |
| Underneath | Pump seal, hoses, inlet valve |
Dishwasher water path
- 1Inlet valveFills the tubTechnician
- 2Circulation pumpDrives the spray armsTechnician
- 3Spray armsClear blocked holesYou can check
- 4FilterClean monthlyYou can check
- 5Drain pump + hoseTo disposal or sink drain
Don't attempt
Leave this to a professional
- Removing the toe kick to work near the wiring and water connection
Possible causes in more detail
| Cause | Typical clue |
|---|---|
| Dirty or torn door gasket | Drips along the bottom edge of the door |
| Wrong detergent or too much | Suds visible at the door or vent |
| Dishwasher not level | Water at one front corner |
| Loose drain or supply connection | Water under the unit near the sink side |
| Pump seal | Leak only during wash or drain |
How it's diagnosed
The technician removes the toe kick, runs a short cycle, and watches the pump, hoses, and inlet valve connection with a flashlight. Door leaks are checked by inspecting the gasket and door alignment and confirming the right detergent is being used.
Cost and repair-or-replace
Gaskets and hoses are inexpensive. Pump seals and inlet valves are moderate repairs. A leak from a cracked tub generally means replacement. Check under the dishwasher for floor damage either way — it can cost more than the repair.
What to request
A symptom points to likely causes; only testing confirms one. If the checks above don't solve it, request a diagnosis for dishwasher repair and mention what you've already checked.
Common questions
Can dish soap make my dishwasher leak?
Yes. Hand dish soap creates heavy suds that can push past the door seal.
Is it safe to keep using a leaking dishwasher?
Not until you know where the water is going. Even small leaks under the tub can damage flooring and cabinets over time. Stop using it, dry the area, and have the source found.
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