Dishwasher Leaking
Water on the floor near a dishwasher comes from the door seal, a hose connection, a pump seal or overfilling.
21 Google reviews · Same-day appointments may be available · Licensed & insured · Upfront pricing — no hidden fees
A leaking dishwasher can leave a puddle in front of the door, a wet cabinet under the sink, or a soft spot in the floor that shows up long after the leak began. Where the water appears is a strong clue: in front points to the door seal or suds, and underneath points to a hose, the inlet valve or a pump seal.
Some models stop with a leak code when water reaches the base pan, which protects the floor but leaves the dishes unwashed. Switch off the power and close the water valve first, then use the checks below to find the source.
Dishwasher Leaking: common causes
- Worn or dirty door gasket — A seal that is torn, flattened or caked with food lets water past the door edge, and the drip lands in front of the dishwasher.
- Loose or cracked inlet connection — The supply fitting at the inlet valve stays under pressure and can drip with the dishwasher off. The valve sits behind the bottom front panel on many models, and under the sink at the supply valve on Bosch and Thermador models with AquaStop.
- Drain hose or clamp leak — A split hose or a loose clamp at the pump or at the disposal drips during the drain part of the cycle.
- Pump or sump seal leak — The seals around the circulation and drain pumps wear, and water runs down into the base under the tub.
- Suds or overfilling — Hand dish soap or too much detergent foams out past the door, and a stuck inlet valve or float can let the tub overfill.
- Dishwasher out of level — A machine that tilts forward sends water toward the door seal and out onto the floor.
Signs to look for
- A puddle in front of the door — The door gasket, the lower door seal or suds pushing past the door.
- Water under the dishwasher or in the cabinet beside it — A hose, the inlet valve connection or a pump seal.
- A damp floor while the dishwasher is off — The water supply connection, which stays pressurized between cycles.
- A leak code, or the cycle stops while the drain pump keeps running — Water has reached the base pan and tripped the leak sensor or float.
- Drips in the sink cabinet near the disposal — The drain hose connection at the disposal or the sink tailpiece.
Checks you can do safely before you call
- Cut the power, then close the water valve. Switch off the dishwasher's breaker at the panel, and the disposal's too if water has reached the outlet under the sink; never touch a plug in a wet cabinet. Then shut the supply valve under the sink, because a supply leak keeps going with the dishwasher off.
- Dry everything and look. Wipe the floor and the cabinet dry, then use a flashlight along the front edge, the sides and the cabinet under the sink. With the power and water still off, you can unscrew the toe-kick panel at the bottom front to look underneath. Wear gloves for the sheet-metal edges, and look, but leave the wiring box behind it alone.
- Inspect the door gasket. Run your fingers around the seal on the tub opening and along the strip at the bottom of the door. Wipe off food and grease with a damp cloth and look for tears or flat spots.
- Rule out suds. When hand dish soap or a heavy dose of detergent went in, wipe out the foam and run a rinse with nothing added before you look further.
- Check the level. Lay a level across the front of the tub opening and along a rack rail. A dishwasher that tilts toward the door pushes water at the seal, and leveling a hard-plumbed machine means adjusting its feet, which the technician can do.
- Watch a short cycle. Refit the toe-kick panel, reopen the valve, restore the power and run a short cycle with the floor dry. Watch without reaching under the machine. A drip while it fills points to the inlet connection, one during the wash to the door or a pump seal, and one while it drains to the drain hose.
When to call a technician
- Water keeps appearing under the dishwasher with a clean gasket and the right detergent.
- The inlet connection drips with the dishwasher off. A leak at the shut-off valve itself is a job for a plumber.
- A leak code appears, or the cycle stops while the drain pump keeps running.
- The cabinet floor or the subfloor feels soft, or the wood is swelling.
- The tub is cracked or rusted through.
What happens at the diagnostic visit
The technician removes the toe kick, runs the dishwasher with the base in view, and checks the inlet valve and its fitting, the door gasket and lower seal, the drain hose clamps, the pump and sump seals, the float and leak sensor, and the tub itself. The dishwasher is also checked for level and for the brackets that hold it to the counter.
The diagnostic visit is $89 for a standard residential appliance and $129 for a built-in unit or commercial equipment; a premium brand on its own doesn't make an appliance built-in. Before any repair, you know what is leaking and what fixing it costs. Leak repairs are part of our dishwasher repair service.
Brand and model notes
- Bosch and Thermador: E15 is the AquaStop system reporting water in the base pan, and the drain pump keeps running. The machine stays stopped until the leak is fixed and the base is dry, so a reset won't hold. Don't tip the dishwasher to empty the base pan: it is plumbed, wired and fastened in place. See Bosch and Thermador.
- Miele: the Waterproof system stops the dishwasher and shows a fault message when it detects water in the base. Close the water valve and don't keep restarting it. See Miele dishwasher repair.
- Samsung and LG: Samsung shows LC when its leak sensor finds water in the base, and LG shows AE or E1. See Samsung and LG.
- Fisher & Paykel DishDrawer: each drawer seals against its own lid during the wash, so on a double DishDrawer note which drawer leaks, top or bottom, before you call. See Fisher & Paykel.
Book a diagnostic visit
$89 standard residential · $129 built-in or commercial. We identify the issue, explain your options and give you an upfront quote before any repair work begins.
21 Google reviews · Same-day appointments may be available · Licensed & insured · Upfront pricing — no hidden fees
Dishwasher Leaking: questions and answers
Why is my dishwasher leaking from the bottom of the door?
A leak at the front edge comes from the door gasket or the lower door seal, from suds pushing past the door, or from a dishwasher that tilts forward. Clean and check the gasket, use only dishwasher detergent, and make sure the machine sits level before you book a repair.
Can I keep running a dishwasher that leaks?
It's safer not to. Water under a dishwasher soaks into the cabinet and the subfloor, where the damage stays hidden, and a leak at the supply connection keeps going between cycles. Switch off the power at the breaker, then close the water valve under the sink, and leave both off until the source is found.
Why does my dishwasher leak only when it drains?
A leak that appears during the drain part of the cycle points to the drain hose, its clamp at the pump, or the connection at the garbage disposal or sink. Keep a towel ready and look under the sink while the dishwasher drains to see where the drip starts.
What does the leak sensor in a dishwasher do?
On models that have one, a float or sensor in the base pan detects water that has escaped inside the machine. It stops the fill and runs the drain pump, and many models show a code. The sensor is protecting your floor, so the fix is finding the leak, never bypassing the sensor.
Why choose SteelPeak Appliance Repair
Licensed & insured company
SteelPeak Appliance Repair is a licensed and insured company serving Los Angeles, the San Fernando Valley and Santa Clarita.
Price before work starts
The technician explains what failed and gives you the repair price. Nothing is repaired until you approve it.
Book online or call
Book a visit online anytime, or call (661) 465-3676 during business hours.
Repair warranty
Repairs come with a SteelPeak repair warranty. Ask for the terms on your invoice.
Dishwasher Repair
Ready to get your dishwasher fixed?
Book online for the fastest scheduling, or call to talk it through.
21 Google reviews · Same-day appointments may be available · Licensed & insured · Upfront pricing — no hidden fees