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
See all KitchenAid repair services.
What will this cost?
Trying to decide repair vs. replace? These pages break down real all-in pricing by brand, model class, and failure mode — so you know the number before we knock.
