The short answer
Dishes that come out dirty or gritty: on an IKEA dishwasher that is usually a fouled filter recirculating dirty water, not a failed wash pump. Second, and worth checking in the same hour, is a load blocking the spray. Most causes below are owner checks needing no tools and no panel off; the last is a service call.
What you are looking at
- Grease smears rather than lifting — Plates feel slick rather than dirty.
- Dishes come out with a gritty film — Fine debris redeposited across everything.
- Glassware is cloudy and stays cloudy — A chalky film that a hand wash removes.
- NEAR MISS -- dishes are clean but wet — That is a drying fault, not a wash fault.
Causes, most likely first on this kind of unit
- The filter is fouled — The filter catches what comes off the dishes. Packed with paper labels, seeds and grease, it recirculates dirty water and leaves a gritty film on everything. Ranked first: on an IKEA appliance on its mainstream OEM platform, the filter is the designed maintenance point and the one owners never open, so it comes first.
- The load is blocking the water — A tray, a large pan or an overhanging plate stops the spray arm turning or shadows everything behind it. The cycle runs perfectly and half the load never gets washed. This rank, because water that cannot reach a surface cannot clean it.
- The detergent or rinse aid is the problem — Detergent that has gone hard in a damp cupboard, a pod stuck in a closed dispenser, or an empty rinse-aid reservoir all leave film and spots with nothing mechanically wrong. This rank, because a dispenser that did not open means the cycle ran on water alone.
- The water arriving is not hot enough — A dishwasher relies on hot water at the inlet, and a long pipe run or a low heater setting starves it. Grease smears rather than lifting and detergent never dissolves fully. Late on this list -- worth checking, though it usually shows as greasy rather than gritty dishes.
- The wash pump or diverter — A worn pump or a diverter that no longer alternates racks gives weak pressure that no cleaning will fix. Confirming it needs the machine opened and a meter. It comes last because it is the one cause here that is not an owner repair, so it is last.
Check in this order, and why
- Pull the filter and look at it — Twist it out, rinse it under the tap, and check the sump underneath for debris.
- Spin each spray arm by hand — Close the door slowly and watch for contact; anything that stops an arm is your cause.
- Only after filter, load and water are proven — A clean filter, free arms, hot water and fresh detergent that still washes badly is a service call.
What an owner can safely check
- Pull and rinse the filter, and clear the sump — Twist the filter out, rinse it under the tap, and lift out debris underneath.
Tools: soft brushAbout 10 min
- Spin both spray arms by hand and reload — Nothing may touch an arm; nothing tall may shadow the rack behind it.
About 10 min
- Take the arms off and clear each jet — Hold them to the light and clear the blocked holes with a toothpick.
Tools: toothpickAbout 20 min
- STOP HERE -- the next step needs the kick panel off — Pumps, diverters and heater circuits are technician work.
Before you open anything
Safety
Switch the dishwasher off at its breaker or the switch under the sink before any panel comes off, and close the supply valve before touching a fitting. Water in the sump can be scalding at the end of a cycle.
When to call a technician
Call once the filter, the spray arms, the drain path and the detergent have all been ruled out.
Nearest pages of this class
What this page does not cover
This page covers the IKEA dishwasher as a class, not one family or model line. Where a family- or model-specific page exists for your unit it is the more specific answer -- go there first if your model is named. Deliberately not here: spray-arm part numbers, pump assemblies, sensor locations and the panel-removal order, all of which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
