The short answer
Water on the floor at a BGXDW dishwasher comes from one of four places: the door seal, a hose connection, the sump, or the machine overfilling and coming out at the door. On this build the base tray and its float are worth checking first, because a leak that collects there stops the machine before it stops the water. Treat any leak near an outlet as electrical.
What you observe
- Water appears at the front along the door bottom — The door seal or an overfill. Both leave a line at the threshold rather than a pool further back.
- Water appears under the kickplate or beside a cabinet — A hose connection or the sump. It runs along the base before it emerges, so the exit point is not the source.
- A damp cabinet side or a swollen floor panel — A slow leak that has been running for a while. The damage is usually older than the discovery.
- Suds coming out of the door — Hand dish soap in the machine rather than a fault. It foams enormously and forces water past the seal.
- NEAR MISS — water stands inside and does not leave — That is a drainage fault. It belongs on its own page and it is a different repair.
Causes, most likely first on the BGXDW models
- The door seal is damaged, displaced or dirty — Ranked first: it is the longest seal in the machine, it takes debris and grease, and it is the one component you can inspect fully in a minute with the door open.
- The wrong detergent, or too much of it — Second, and it belongs this high because it is common and costs nothing: hand dish soap generates foam that pushes water straight past a perfectly good seal.
- A hose or fitting under the machine is weeping — Third: fill and drain connections, both hidden behind the kickplate, and both showing as water under the cabinet rather than at the door.
- The sump seal or the tub itself has failed — Last: the most serious and the least common, and the one that decides whether the machine is worth keeping.
Check in this order, and why
- Find where the water starts before mopping — First and always: door threshold, kickplate, or beside a cabinet. Each belongs to a different cause and the clue disappears when you clean.
- Inspect the door seal all the way round with the door open — Second: run a finger along it looking for grit, splits and a section that has lifted from its channel.
- Ask what detergent went in — Third, and it costs nothing: hand dish soap produces exactly this symptom in a machine with nothing wrong with it.
- Pull the kickplate and look for a damp trail with a torch — Last of the owner checks: power off first, and look for a trail rather than a pool.
Before you open anything
Safety
Switch the dishwasher off at its spur or breaker before removing the kickplate — a capacitor can hold a charge after the power is off. Water under a built-in appliance can reach an outlet or a junction box: if the floor is wet beyond the cabinet, kill the circuit before you investigate. Turn the water off at the shut-off under the sink before touching any fitting.
When to call a technician
Call when the seal is sound, the detergent is right and water is still arriving from under the cabinet. On a BGXDW dishwasher that means a fitting, the sump or the tub, and reaching any of them means pulling the machine out from under a counter with the supply live. Call at once if water has reached an outlet, if the floor or cabinet is swollen, or if the machine trips its breaker.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
