Dishwasher Leaking: Where It Comes From and Fixes

Most dishwasher leaks come from a handful of places: the door gasket, the door latch or a unit that is not level, the water supply or drain hose connections underneath, or suds from the wrong detergent. Find where the water first appears, and you have usually found the cause. If water is reaching the floor under the unit or a leak code is showing, shut off the water and power before you do anything else.

First, make it safe

Unplug the dishwasher or switch off its circuit breaker before inspecting it. Then close the water supply. On most installations the shut-off is under the kitchen sink on the small branch line that feeds the dishwasher, and it closes clockwise. If the dishwasher has no working valve of its own, close the main water supply to the house. Do both before you pull the kick panel at the bottom front or reach under the tub.

Wipe up the water and dry the area completely. Samsung suggests confirming it is a real leak by drying everything and running a fresh cycle, so you can watch where the water starts instead of guessing from a puddle that has already spread.

Where the water shows up tells you a lot

Whirlpool notes that a supply line leak tends to show up as dampness under the front of the unit, while door leaks usually trace back to the gasket, the latch or leveling.

Checks you can do yourself

Detergent

Hand soap, dish soap or laundry detergent will make a dishwasher over-suds and push water out the door. GE, LG and KitchenAid all say to use only automatic dishwasher detergent, and LG adds that you should fill the dispenser no higher than its marked lines. If someone recently ran a load with dish soap, run an empty rinse and see whether the leak stops.

Door gasket and latch

Run a finger along the rubber gasket around the tub opening. Amana says to look for cracks, tears or food buildup, and LG recommends wiping grease off the gasket so the door seals. Check that nothing, such as a rack, a utensil or the kick plate, keeps the door from closing fully. Electrolux specifically calls out the kick plate as something that can stop the door from shutting. Beko adds loose door hinges to the list.

Leveling

A dishwasher that leans forward or to one side lets water run toward the door seal. LG says most leaks come from installation, detergent or upkeep, with leveling near the top of the list. Maytag says to level the unit so the door closes squarely. Set a level on the open door or front edge of the tub and adjust the front feet if it is off.

Filter and wash arm

A clogged filter can back water up in the tub. Maytag says to clear the filter and drain path, and GE says to make sure the lower wash arm spins freely, since a stuck arm can spray water straight at the door. Our guide on a dishwasher not draining walks through clearing the filter and drain.

Connections underneath

With the power and water off, remove the kick panel and look at the supply line where it meets the inlet valve, and at the drain hose where it leaves the pump and where it connects under the sink. Samsung and Beko both point to the supply hose, the drain hose connection and the door seal as the main places to inspect. A drip at a fitting can sometimes be stopped by snugging the connection; a cracked hose needs replacing.

Leak codes and leak protection

Many dishwashers have a sensor or float in the base pan that shuts things down when water collects there. When it trips, the unit usually stops filling and runs the drain pump.

• Bosch E15: water has reached the base safety switch. Bosch says to shut off the water supply and seek service. See our Bosch error code guide.
• Samsung LC or LE: the leak sensor under the unit has detected moisture, and the drain pump keeps running until it clears.
• LG AE, E1 or FE: a leak or overfill was detected, often from over-sudsing, an unlevel unit or a misaligned door. LG says the overfill switch can take up to 48 hours of drying with the power off to reset. More in our LG error code guide.
• KitchenAid and Maytag F8E4: water in the drip tray. Both brands say to empty the tray, confirm the float switch is connected and look for leaking water connections.
• Beko E:01: an overflow or leak was detected and the unit is trying to pump the water out.

A leak code means water has already gotten past the tub. Even if the code clears after drying, the source still has to be found.

Parts that commonly fail

• Door gasket: hardens, tears or shrinks with age.
• Door latch or hinges: a bent latch or worn hinge keeps the door from pulling tight against the gasket.
• Water inlet valve: can crack or leak at its fitting under the front of the unit.
• Drain hose or pump seals: Beko lists the motor and pump seals as the next likely source once the door and hoses check out.
• Tub or spray arm: less common, but a cracked tub or broken spray arm can throw water where it should not go.

A technician will usually run a short cycle with the kick panel off and a light under the unit to see exactly where water appears, then check the inlet valve, pump housing, sump and hose clamps. They also check whether the leak sensor or float is tripping on real water or has failed on its own.

When to stop and call a pro

Call a technician if water is coming from inside the base rather than the door, if a leak code keeps returning after the base has dried, if you see water near wiring or the electrical box, or if the fix means replacing the inlet valve, pump or a seal behind the tub. A leak left alone can soak cabinets and subfloor, so it is worth acting quickly. You can find local technicians through our dishwasher repair directory or browse by state, for example dishwasher repair in Houston or Atlanta. If you know your brand, the Samsung and Bosch pages list companies that work on those models.

What a leak repair costs

HomeAdvisor puts leak repairs, including a leaking door, at roughly $50 to $300. Fixr lists a door gasket or seal replacement at about $50 to $150 and a door replacement at $150 to $600, while HomeAdvisor puts a water inlet valve at about $80 to $125. Fixr also notes a service call fee of about $35 to $100, which is often credited toward the repair if you go ahead. If the unit is older and the repair is a big one, our guide to how long dishwashers last can help you decide whether to repair or replace, and the dishwasher repair cost guide covers other common repairs.