KitchenAid Dishwasher Troubleshooting: Common Problems & Fixes

1. KitchenAid Dishwasher Not Cleaning Dishes Often DIY

Dishes coming out dirty or with food residue is the most common complaint. Here are the causes in order of likelihood:

Clogged Spray Arms

The upper and lower spray arms have small holes that can become blocked with mineral deposits or food debris. When clogged, water pressure drops and dishes don't get properly rinsed.

Fix: Remove the spray arms (twist counterclockwise or unclip, depending on model). Rinse under warm water and use a toothpick to clear any clogged holes. Check that the arms spin freely when reinstalled.

Dirty or Clogged Filter

KitchenAid dishwashers use a manual-clean filter at the bottom of the tub. Unlike older dishwashers with self-cleaning filters, this must be cleaned every 1-3 months. A clogged filter recirculates dirty water over dishes.

Fix: Locate the cylindrical filter in the bottom of the dishwasher. Turn counterclockwise to remove. Rinse under warm water, scrub gently with a soft brush if needed, and reinstall. Clean monthly for best results.

Low Water Temperature

KitchenAid dishwashers work best when water temperature reaches 120–140°F (49–60°C). If your water heater is set too low, detergent won't dissolve properly and grease won't break down.

Fix: Run the hot water tap in your kitchen sink for 30 seconds before starting the dishwasher. This purges cold water from the supply line. Consider raising your water heater temperature to 120°F.

Wrong Loading Pattern

Overloading or blocking the spray arms is a common cause. Items on the bottom rack should face inward and downward. The top rack is for glasses and cups face-down.

Fix: Leave space between items. Large pots and pans go on the bottom rack facing the spray arm. Don't let tall items block the upper spray arm from rotating.

2. KitchenAid Dishwasher Not Draining Often DIY

Standing water at the bottom of the dishwasher after a cycle points to a drainage problem. Check these causes:

Clogged Filter (Most Common)

A heavily clogged filter is the #1 cause of drainage failure. If the filter is blocked, water cannot pass through to the drain pump.

Fix: Clean the filter as described above. Run a short cycle to test drainage.

Blocked Drain Hose

The drain hose connects the dishwasher to the garbage disposal or drain under the sink. Kinks or blockages prevent water from exiting. The hose should have a high loop under the counter to prevent back-siphoning.

Fix: Pull out the dishwasher and inspect the drain hose for kinks. Check the connection to the garbage disposal — if you recently installed a new disposal, make sure the knockout plug was removed.

Garbage Disposal Blockage

If your dishwasher drains into a garbage disposal, a clog or recently installed disposal without the knockout removed will prevent drainage.

Fix: Run the garbage disposal for 30 seconds before starting the dishwasher. If you recently installed a new disposal, check that the dishwasher inlet knockout plug has been removed.

Faulty Drain Pump

If the above steps don't work, the drain pump motor may have failed. You'll often hear the pump trying to run but no water moving.

Fix: Professional repair A technician will test the drain pump with a multimeter and replace it if faulty. This is a $150–$300 repair.

3. KitchenAid Dishwasher Not Starting Check basics first

If the dishwasher won't start at all, work through these checks:

Door Latch Not Fully Engaged

KitchenAid dishwashers have a safety switch that prevents operation if the door isn't fully latched. Even slightly ajar, the dishwasher won't run.

Fix: Push the door firmly until you hear a click. Try starting the cycle again.

Control Lock Activated

The control lock (child lock) disables all buttons except Cancel. The lock icon may appear on the display.

Fix: Press and hold the Control Lock button for 3 seconds to deactivate. On some models, hold the Heated Dry button for 3 seconds.

Power Issue

Check that the circuit breaker for the kitchen hasn't tripped. Also check if the outlet has power (try plugging in another device).

Fix: Reset the circuit breaker. If it trips again, there may be an electrical issue requiring an electrician.

Control Board Failure Professional

If all above checks pass and the dishwasher still won't respond, the electronic control board may have failed.

Fix: A technician will diagnose and replace the control board. This is typically a $200–$400 repair for KitchenAid dishwashers.

4. KitchenAid Dishwasher Making Unusual Noise

Different noises point to different problems:

5. KitchenAid Dishwasher Door Problems Often Professional

Door Won't Latch

The door latch catches on a plastic or metal strike on the dishwasher tub. If worn or broken, the latch won't engage and the dishwasher won't start.

Fix: Inspect the door latch and strike plate for damage. Latch replacement is a $100–$200 repair.

Door Gasket Leaking

The rubber door gasket creates a watertight seal. Over time it cracks, hardens, or tears, causing water to leak out around the door.

Fix: Inspect the gasket around the door perimeter for tears or flattened sections. Door gasket replacement runs $100–$200 including labour.

Door Spring Broken

KitchenAid dishwasher doors should stay open at any angle without swinging open or slamming shut. If the door falls open or closes hard, the door spring or cable may need replacement.

Fix: This is a professional repair. A technician replaces the door spring or cable, typically $150–$250.

6. KitchenAid Dishwasher Error Codes

KitchenAid dishwashers display error codes as flashing lights or numeric codes on the display. Here are the most common:

How to Reset a KitchenAid Dishwasher to Clear Error Codes

1. Press the Cancel or Cancel/Drain button and hold for 3 seconds
2. Wait for the dishwasher to drain (about 90 seconds)
3. If the error persists, turn off the circuit breaker for 60 seconds, then restore power
4. If the error returns after reset, the underlying component needs repair or replacement