The short answer
A leak from the DWDI family is usually the door seal or the supply connection rather than the tub itself, and on a built-in machine the water travels under the cabinet before it shows. The brand-generic page treats the door seal first; on this platform the fill and drain connections behind the machine deserve equal billing, because they leak out of sight.
What you observe
- Water appearing at the toe kick during a cycle — The floor of the cabinet channels everything forward, so the visible point is almost never the source.
- A wet line down the front of the door — Points at the door seal or at a door that is no longer pulling square against it.
- A stain on the cabinet floor with no water present — A historic or intermittent leak, and it usually means a fill or drain event rather than a constant seep.
- Water only on heavy or long cycles — A leak that needs heat or a full fill to show, which points at the door seal or an overfill.
- NEAR MISS - water only when the sink is used — That is a plumbing fault at the shared waste, not a dishwasher fault.
Causes, most likely first on DWDI
- Door seal hardened, displaced or dirty — Ranked first on the DWDI family: the seal on this family runs around a tall narrow door, and the bottom corners are where it lifts first. These codes share a tub and a wash system, so a finding on one of them is worth assuming on the rest. What moves against the brand-generic order is lower down: drain hose connection or a split hose sits above overfill from a stuck inlet valve or float here, because this family is a single build with fixed access points.
- Supply connection at the inlet valve or the stop tap — Second: made up behind the machine in a tight recess, so a slow weep runs down the cabinet floor and shows at the front.
- Drain hose connection or a split hose — Third: the hose is clipped high behind the machine and is chafed by the cabinet edge over years of service.
- Overfill from a stuck inlet valve or float — Fourth: an overfill shows as a leak at the door bottom and is easy to mistake for a seal fault.
- Tub, sump gasket or heater seal — Last: last: a cracked tub is uncommon, and the sump gasket is a service item rather than an owner check.
Check in this order, and why
- Dry everything, run a cycle and watch where it wets first — The order in which two points get wet tells you which is the source and which is the path.
- Check the machine is level front to back — A machine tilted forward holds water against the door bottom instead of returning it to the sump.
- Look under the toe kick with a torch while the cycle runs — It shows whether water is arriving from behind or running down the door.
- Look at the detergent and the rinse-aid setting — It costs nothing, and it is the whole answer when the leak is foam rather than water.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Shut the stop tap before disturbing any supply fitting, and leave the door interlock and its wiring exactly as the factory ran them: that interlock is what keeps the machine from spraying with the door open.
When to call a technician
Isolate the machine at the stop tap the moment you see a supply-side leak. A seal or a detergent fault is owner work; a weeping union behind a built-in machine means pulling it out with the water off, and that is where most owners should stop.
Other DWDI pages
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
