Direct answer: A dishwasher filter that keeps clogging usually means too much food debris is getting into the sump, the dishwasher is not draining fully between cycles, or the wash action is weak enough that scraps settle instead of flushing away.
Most likely: Most often, the filter is doing its job but getting overloaded by heavy food soil, grease buildup, a partly blocked drain path, or a clogged dishwasher spray arm.
Start with the easy physical checks: pull the lower rack, remove the dishwasher filter, look for standing water, and inspect the sump and spray arm holes. Reality check: a little linty sludge on the filter is normal, but a filter packed with mush every few loads is not. Common wrong move: running repeated cycles with a dirty filter and hoping hot water will clear it out.
Don’t start with: Do not start by buying a dishwasher drain pump or control parts. Repeated filter clogs are usually a maintenance or flow problem first.
The dishwasher filter comes out coated with wet scraps, grease, or gray sludge even though you cleaned it recently.
Start here: Start with the filter housing, sump pocket, and your loading and scraping habits before assuming a bad part.
You remove the filter and see dirty water sitting below it, or the tub smells swampy after the cycle ends.
Start here: Start with the drain path, sink air gap if you have one, and the dishwasher drain hose route.
Food specks stay on plates and the lower area of the tub looks gritty after a full cycle.
Start here: Start with the lower dishwasher spray arm and make sure its holes are not packed with seeds, labels, or hard debris.
The filter is not full of chunks so much as sticky sludge that smears across the mesh and sump area.
Start here: Start with a manual cleaning of the filter, sump opening, and tub base because grease and starch can choke flow without a broken part.
The filter is meant to catch debris, but it will plug fast if plates go in with thick sauce, rice, pasta, eggs, or greasy scraps.
Quick check: Clean the filter completely, run two normal loads with dishes scraped well but not prewashed, and see whether the clogging rate drops.
When dirty water lingers under the filter, old debris softens and gets pulled back into the filter on the next wash.
Quick check: After a cycle ends, check for water in the sump area and inspect the sink air gap and dishwasher drain hose for partial blockage or a sag that traps sludge.
Weak spray leaves food sitting in the bottom where the filter catches it instead of moving it through the wash pattern.
Quick check: Spin the lower spray arm by hand and inspect every hole for seeds, glass bits, paper label pieces, or mineral crust.
Small bones, glass, twist ties, labels, and softened paper can sit below the filter and keep feeding the clog.
Quick check: With power off, remove the filter and look into the sump pocket with a flashlight for hard debris or a slimy mat around the intake area.
You need to know whether you are dealing with normal food debris, greasy sludge, hard objects, or a drain problem. The material on the filter tells the story.
Next move: If the filter was simply loaded with obvious food scraps and the dishwasher now runs cleaner for several loads, the main issue was overload and buildup, not a failed part. If the filter is clean but clogs again right away, move on to the sump and drain checks.
What to conclude: Fast repeat clogging after a proper cleaning usually means debris is hiding below the filter, the drain path is restricted, or wash action is weak.
A dishwasher filter keeps clogging when dirty water is not leaving the machine fully. Old water turns yesterday's debris into today's sludge.
Next move: If the dishwasher now drains cleanly and the filter stays cleaner, the repeated clogging was being fed by a partial drain restriction. If the tub still holds water or the filter keeps loading up even with a clear hose end, check the wash side next.
What to conclude: A partial restriction can be enough to keep the filter wet and dirty between cycles even when the dishwasher seems to finish normally.
A lot of repeat clogs come from junk sitting just below the filter where rinse water keeps softening it and feeding it back into the screen.
Next move: If you pull out hard debris or a sludge mat and the filter stays cleaner afterward, you found the source that kept re-clogging it. If the sump is clean but dishes still leave food behind and the filter reloads quickly, check spray coverage.
If the lower spray arm is clogged or split, food stays in the tub instead of being washed away, and the filter ends up doing all the work.
Next move: If cleaning or replacing a damaged spray arm restores wash action and the filter stops loading up so fast, poor circulation was the real problem. If spray action seems normal and the filter still clogs quickly, the filter itself may be damaged or the machine may have a deeper internal circulation or drain issue.
By now you have separated normal maintenance issues from the smaller number of cases where a dishwasher part is actually worn or damaged.
A good result: If a damaged filter or spray arm was the confirmed fault, the dishwasher should finish with a cleaner tub bottom and a filter that stays usable for many loads.
If not: If the same clogging pattern returns even after these checks, the problem is deeper than routine maintenance and needs internal diagnosis.
What to conclude: The two homeowner-level replacement parts here are the dishwasher filter and lower dishwasher spray arm. Persistent clogging beyond that usually points to an internal circulation or drain problem, not a part to guess at online.
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Usually because the filter is catching more debris than normal or the dishwasher is not clearing that debris out between cycles. Heavy food soil, grease, a partly blocked drain path, or weak spray from the lower dishwasher spray arm are the usual causes.
A light film or a few soft scraps can be normal, especially after a heavy meal. A filter that packs solid with sludge every load or two is not normal and points to too much debris, poor draining, or weak wash action.
You can, but it usually makes the problem worse. A loaded filter cuts water flow, traps odor, and lets old debris keep circulating in the tub bottom.
Only if the dishwasher filter is physically damaged. If the mesh is intact and the frame locks in properly, repeated clogging is usually being caused by debris, drain restriction, or poor spray coverage rather than the filter itself.
That usually means old food and dirty water are sitting in the sump or drain path between cycles. Clean the filter, check for standing water, and inspect the air gap and drain hose. If the odor stays after that, the issue overlaps with a deeper dishwasher smell problem.