Standing water at the bottom of a KitchenAid dishwasher is a drain-path fault — pump, filter, hose, or check valve. Most cases close on the first visit with parts from the truck.
Reviewed by Mike Larson, Master Appliance Technician · 18+ yrs in-field · Last reviewed
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Quick answer
KitchenAid dishwashers built on the Whirlpool global platform (KDTM, KDPE, KDTE, KDFE, KDTE700) drain through a chopper-blade pump and check-valve assembly. Five failures cover most "won't drain" calls: clogged chopper / filter, failed drain pump, kinked or sediment-blocked drain hose, stuck check-valve flapper, and an air-gap or disposal blockage upstream. We diagnose in order, replace OEM, and verify two drain cycles before closing. Most repairs land $185–$385 all-in. Flat $149 trip fee waived on approval. 1-year written warranty.
Root causes, ranked by what we find
What it is: KitchenAid's chopper-blade design grinds food but can wrap with labels, twist-tie wire, or fibrous waste (artichoke leaves are the classic). Filter cake on top of the chopper stops drain flow completely.
Fix: Pull and clean chopper + filter assembly, run drain to verify flow, recommend pre-rinse policy.
Typical all-in: $185–$245 all-in
What it is: The drain pump runs but doesn't move water (impeller stripped) or doesn't run at all (motor open or board output failed). Common at year 5–8 on hard-water homes.
Fix: Replace OEM drain pump, verify drain flow and electrical draw.
Typical all-in: $245–$345 all-in
What it is: Drain hose sediment buildup (calcium / grease) or a kink at the cabinet pass-through. Tested by disconnecting at the disposal and running a forced drain.
Fix: Replace OEM drain hose if blocked or worn, re-route with proper high-loop, verify drain flow.
Typical all-in: $215–$315 all-in
What it is: The check valve in the sump prevents drain water from siphoning back in. Stuck closed = no drain; stuck open = standing water from sink fills back into the tub.
Fix: Replace OEM check-valve / flapper, verify drain and no back-flow.
Typical all-in: $225–$315 all-in
What it is: Plugged disposal knockout (new disposal installed without removing the dishwasher knockout) or clogged air gap. Dishwasher is fine — the path downstream isn't.
Fix: Clear knockout / air gap, re-run drain cycle. No part required.
Typical all-in: $149 trip fee only
Diagnostic order
Run the disposal first. If sink is plugged, fix the sink — dishwasher is fine.
Remove lower spray arm, lift filter, inspect chopper for wraps, debris, or stripped blades.
Start a normal cycle and immediately cancel — drain pump should run 60 seconds. No sound = pump electrical / board. Hum but no flow = stripped impeller.
Run forced drain into a bucket. Strong flow = downstream blockage (disposal / air gap). Weak / no flow = drain pump or check valve.
Inspect the flapper, confirm drain hose has a high-loop, replace if missing.
FAQs
Most often a clogged chopper / filter or a failed drain pump — both diagnosed and fixed in a single visit. Sometimes it's actually the kitchen sink drain or a plugged disposal knockout (not the dishwasher at all).
If you're comfortable removing the bottom spray arm and filter, cleaning the chopper assembly is a 20-minute job. Anything beyond that (pump, check valve, drain hose) involves pulling the dishwasher and is faster done by a tech.
Filter / chopper cleaning lands around $185–$245. Drain-pump replacement is $245–$345. Drain-hose or check-valve work runs $215–$315. The $149 trip fee is credited to whatever repair you approve.
KDTM, KDPE, KDTE, KDFE, and KDTE700-series 4–9 years old. Hard-water homes see drain-pump failures earlier; homes without garbage disposals see chopper clogs more often.
KitchenAid dishwashers are built on the Whirlpool global platform with parts availability through at least year 12. Drain repairs at $185–$345 are easily worth it on a $1,000+ unit.
Yes — OEM drain pumps, check valves, chopper assemblies, drain hoses, and filters are stocked on every truck.
Related coverage
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