The short answer
A Kenmore dishwasher leak needs two pieces of information before any part is ordered: which manufacturer built the machine, from the leading digits of the model number, and which phase of the cycle the water appears in. The phase names the path — fill, wash or drain — and the model number decides whose sump, gasket or valve will actually fit.
Causes, ranked for this Kenmore dishwasher
- Drain hose high loop missing or the disposer knockout left in — Why: These are installation faults rather than component ones, and they cause dirty water in the tub and at the floor — which is why dirty water is diagnostic.
- Door gasket displaced or hardened at a corner — Why: The corners stretch most and take the push from a tall item in the lower rack, producing a localised drip rather than a puddle.
- Sump gasket or wash-motor seal — Why: The classic tub leak, appearing during wash at the centre of the toe kick; which part it is depends entirely on who built the machine.
- Supply connection or inlet valve — Why: Made at installation and then hidden, so a fitting never fully tightened weeps into the cabinet base for months before it shows.
- Machine out of level in its opening — Why: An out-of-level machine holds water to one side and loads the door seal unevenly, contributing to several of the causes above.
What to check, in order
- record the full model number from the plate on the tub edge behind the door. — Because: Kenmore machines are built by several manufacturers and no part can be ordered without knowing which.
- dry everything and identify the phase in which water first appears. — Because: phase eliminates most of the list before anything is opened.
- open the sink cabinet and check the drain hose loop, the clamp and any disposer knockout. — Because: these installation faults are common and correctable without a part.
- run a strip of paper round the door at each corner. — Because: it maps a gasket failure precisely and distinguishes it from a leak arriving from underneath.
Checks you can safely do yourself
- Open the door and record the complete model number from the plate on the tub edge, including its leading digits. — Tools: none — Time: a few minutes
- Switch off power at the breaker, close the supply stop, dry the floor and toe kick and lay paper towel across both. — Tools: paper towel — Time: several minutes
- Restore power, run a short cycle and check the towel at fill, wash and drain, noting the first moment and place it darkens. — Tools: a torch — Time: the better part of an hour, mostly waiting
- Trace the drain hose in the sink cabinet, confirm it rises to a high loop, tighten the clamp and check any recent disposer connection. — Tools: a torch and a nut driver — Time: several minutes
- Run a strip of paper round the door at each corner and check the machine is level. Stop here: reaching the sump means pulling the machine out. — Tools: a spirit level and a strip of paper — Time: the better part of an hour
Before you open anything
Safety
unplug-before-service
Water beside a mains-powered appliance is a shock hazard as much as a flooring one. Kill power at the breaker rather than the door latch before reaching under the machine, and close the supply stop before disturbing any fitting. If the cabinet base is soft or the flooring has lifted, stop using the machine until the source is found.
Where the owner fix ends
Recording the model number, correcting a drain loop, tightening a clamp and mapping the door seal are owner work. Call a technician once the leak is confirmed to arrive from under the tub, because reaching the sump means pulling the machine out; and call at once if damp reaches an electrical connection or the breaker trips.
Nearest pages of the same kind
Generalized information — what this page does not cover
family model
This page is generalized information about Kenmore dishwashers, a badge covering machines from several different manufacturers with different tubs, sumps, vents and gaskets. The diagnostic order holds across all of them; the parts do not. No family-level or model-level page exists in this reference yet; when one is published it will be linked here.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
