Dishwasher Making Noise When Running

Quick answer

Turn off and unplug the dishwasher. Check for foreign objects in the drain or spray arms. If clear, inspect the motor, pump, and wash impeller for damage or wear. Replace any faulty parts as needed.

Confirm the symptom

• Dishwasher makes loud or unusual noises during the wash cycle.
• Noises occur consistently during each cycle.
• Dishwasher drains properly but remains noisy.
• No visible leaks or error codes displayed.
• Dishwasher completes cycles but with excessive noise.

Tools and prep

• Screwdriver (Phillips and flathead)
• Pliers
• Flashlight
• Replacement parts (if needed)
• Towel
• Turn off and unplug the dishwasher
• Shut off the water supply to the dishwasher
• Allow the dishwasher to cool down if it was recently in use

Step-by-step troubleshooting

1. Check for Foreign Objects
   Do: Remove the bottom rack and check the drain and spray arms for any foreign objects.
   Observe: Look for items like bones, glass, or plastic pieces.
   Means: Foreign objects can cause loud noises and impede proper functioning.
   Next: If found, remove the objects and run a test cycle.
2. Inspect the Wash Impeller
   Do: Locate the wash impeller at the bottom of the dishwasher.
   Observe: Check for any damage or wear.
   Means: A damaged impeller can cause excessive noise.
   Next: If damaged, replace the wash impeller.
3. Examine the Dishwasher Pump
   Do: Access the pump, usually located at the bottom front of the dishwasher.
   Observe: Look for any signs of damage or blockages.
   Means: A faulty pump can produce loud noises during operation.
   Next: If damaged, replace the pump.
4. Check the Motor
   Do: Locate the motor, typically at the bottom of the dishwasher.
   Observe: Listen for unusual noises when the dishwasher is running.
   Means: A malfunctioning motor can cause excessive noise.
   Next: If the motor is faulty, replace it.
5. Inspect the Spray Arms
   Do: Remove the spray arms and check for blockages.
   Observe: Look for food particles or mineral deposits.
   Means: Blocked spray arms can cause noise and reduce cleaning efficiency.
   Next: Clean or replace the spray arms as needed.
6. Check the Dishwasher's Level
   Do: Use a level to ensure the dishwasher is properly aligned.
   Observe: Adjust the leveling legs if necessary.
   Means: An unlevel dishwasher can cause noise due to vibrations.
   Next: Re-level the dishwasher and run a test cycle.
7. Inspect the Dishwasher's Suspension System
   Do: Check the suspension rods and springs.
   Observe: Look for any signs of wear or damage.
   Means: A damaged suspension system can cause excessive noise.
   Next: Replace any damaged parts.

Common causes

Parts matching

Here are some parts that commonly need replacement when a dishwasher is making noise.

• Wash Impeller: Ensures proper water circulation.
• Dishwasher Pump: Moves water through the system.
• Motor: Powers the dishwasher's operation.
• Spray Arms: Distribute water to clean dishes.
• Suspension Rods/Springs: Support the dishwasher's tub.

Always ensure you have the correct replacement parts for your specific dishwasher model.

When to call a professional

• If the dishwasher continues to make noise after troubleshooting.
• If you are not comfortable performing the repairs yourself.
• If the dishwasher leaks or shows error codes.
• If the dishwasher does not complete cycles properly.
• If you suspect a major component failure, like the motor.

FAQ

Related guides

• dishwasher not draining
• dishwasher not cleaning properly
• dishwasher error codes
• dishwasher making loud noise

Related searches: dishwasher leaking, dishwasher maintenance tips, dishwasher replacement parts, dishwasher repair guide, dishwasher spray arm issues, dishwasher pump replacement, dishwasher motor problems, dishwasher leveling