Dishwasher Making Noise

Quick answer

First, ensure the dishwasher is empty and run a cycle to identify the noise. Check for foreign objects in the dishwasher. If the noise persists, inspect the spray arms and drain system. If needed, replace worn-out parts.

Confirm the symptom

• Dishwasher makes loud noises during operation.
• Unusual grinding, rattling, or buzzing sounds.
• Noise occurs during specific cycles or continuously.
• Dishwasher functions but is excessively loud.
• Noise starts suddenly without any changes in usage.

Tools and prep

• Screwdrivers (Phillips and flathead).
• Pliers.
• Flashlight.
• Towels to soak up water.
• New parts if needed (check steps below).
• Turn off power at the circuit breaker.
• Shut off water supply to the dishwasher.

Step-by-step troubleshooting

1. Inspect for Foreign Objects
   Do: Remove the bottom rack and check for any foreign objects.
   Observe: Look for coins, bones, or other items that may have fallen in.
   Means: Foreign objects can cause noise and block water flow.
   Next: Remove any objects found and run a test cycle.
2. Check Spray Arms
   Do: Remove the spray arms and inspect for blockages.
   Observe: Look for food particles or mineral deposits.
   Means: Blocked spray arms can cause noise and poor cleaning.
   Next: Clean the spray arms and run a test cycle.
3. Inspect the Drain System
   Do: Check the drain filter and drain hose for clogs.
   Observe: Look for food particles or debris.
   Means: Clogs can cause noise and prevent proper draining.
   Next: Clean the drain system and run a test cycle.
4. Examine the Pump and Motor
   Do: Listen for noise coming from the pump and motor area.
   Observe: Note if the noise is constant or intermittent.
   Means: Worn-out pump or motor can cause excessive noise.
   Next: If necessary, replace the pump or motor.
5. Check the Wash Impeller
   Do: Remove the lower access panel and inspect the wash impeller.
   Observe: Look for damage or wear.
   Means: A damaged impeller can cause noise and poor cleaning.
   Next: Replace the wash impeller if necessary.
6. Inspect the Dishwasher Level
   Do: Check if the dishwasher is level.
   Observe: Use a level tool to ensure it's even.
   Means: An unlevel dishwasher can cause noise during operation.
   Next: Adjust the leveling legs if necessary.
7. Test the Dishwasher
   Do: Run a test cycle with no dishes.
   Observe: Listen for any unusual noises.
   Means: This helps confirm if the issue is resolved.
   Next: If noise persists, consider professional help.

Common causes

Parts matching

If your dishwasher is making noise, you might need to replace one of these parts.

• Spray Arms: Ensure water can flow freely.
• Drain Filter: Prevent clogs and maintain proper drainage.
• Pump or Motor: Replace if worn out or damaged.
• Wash Impeller: Ensure proper water circulation.
• Leveling Legs: Keep the dishwasher stable and level.

Always ensure you have the correct part number for your specific dishwasher model.

When to call a professional

• Noise persists after checking all components.
• You're not comfortable replacing parts yourself.
• Dishwasher leaks or shows signs of electrical issues.
• Parts are not readily available or too costly.
• Dishwasher is under warranty and needs professional attention.
• Noise is accompanied by other malfunctioning symptoms.

FAQ

Related guides

• dishwasher not draining
• dishwasher not cleaning
• dishwasher error codes

Related searches: dishwasher leaks, dishwasher maintenance tips, dishwasher spray arm replacement, dishwasher pump issues, dishwasher motor replacement, dishwasher leveling, dishwasher foreign object removal, dishwasher drain filter cleaning, dishwasher wash impeller