If you have cleared all physical blockages but the water is still draining slowly, you may have a grease buildup in the internal pump.
If your dishwasher drains through a garbage disposal (very common in the US), a clogged disposal will block the dishwasher drain. how to fix a clogged dishwasher drain
With the tub empty, the most common and easily accessible culprit is the drain filter and screen. Located at the bottom of the dishwasher, beneath the lower spray arm, this filter traps large food particles to prevent them from entering the pump. Over time, a layer of grease, broken glass, bone fragments, and congealed soap can form an impenetrable mat over this screen. To address this, remove the bottom dish rack, unscrew or unclip the filter cover (consult the owner’s manual for specific instructions), and lift out the filter assembly. Rinse it thoroughly under hot running water, using a soft brush to dislodge stubborn debris. Many clogs end here; a visually clean filter with clear holes is often the only fix required. If you have cleared all physical blockages but
If your kitchen sink is also draining slowly, the issue is likely a main plumbing clog rather than the dishwasher itself. Located at the bottom of the dishwasher, beneath