KitchenAid Dishwasher Not Cleaning — Fix

What Does This Error Mean?

If your KitchenAid dishwasher is not cleaning well, check the spray arms for blocked holes and clean the filter. Blocked spray arms and a dirty filter are the two most common causes of poor wash results.

Affected Models

KitchenAid Built-In Dishwasher
KitchenAid Top Control Dishwasher
KitchenAid Front Control Dishwasher
KitchenAid KDTM Series Dishwasher

Common Causes

Blocked spray arm jets — food particles or limescale
Clogged filter basket reducing water pressure
Incorrect rack loading — items blocking spray arm rotation
Insufficient detergent or wrong detergent type
Low rinse aid causing spots and poor drying
Failing heating element — water not hot enough

How to Fix It

Clean the filter.

Remove the bottom rack and clean both the cylindrical and flat mesh filters under running water. A clogged filter restricts water flow through the spray arms.
Clear the spray arm holes.

Remove the lower and upper spray arms (unclip or unscrew them). Hold each arm under the tap and use a toothpick to clear every blocked jet. Check that the arms spin freely on their fittings when refitted.
Check loading and rack position.

Ensure the lower spray arm can complete a full rotation without any bowls, pots, or utensils blocking its path. Do not nest items — each piece needs water exposure on all sides.
Check detergent and rinse aid.

Use a name-brand dishwasher tablet or powder. Refill rinse aid if the indicator light is on. Increase the rinse aid dose setting if dishes have a white film or water spots.

When to Call a Professional

If the spray arms are clear and the filter is clean but dishes are consistently greasy or not fully clean, the heating element may be failing — have a technician check wash temperature.