Dishwasher is Making a Loud Noise

Quick answer

Turn off the dishwasher and unplug it. Check for loose items or a clogged filter. If the noise continues, inspect the pump, motor, or drain hose for issues.

Confirm the symptom

• Hearing unusual loud noises during operation
• Noise occurs during wash or drain cycle
• Sound is consistent or intermittent

Tools and prep

• Screwdrivers (flathead and Phillips)
• Flashlight
• Plumber's putty or silicone sealant
• Bucket or towels
• Owner's manual
• Work gloves
• Voltage tester

Step-by-step troubleshooting

1. Unplug the Dishwasher
   Do: Turn off the circuit breaker or unplug the unit.
   Observe: The dishwasher stops immediately.
   Means: Electrical safety is ensured.
   Next: Step 2
2. Check for Loose Items
   Do: Open the dishwasher and look for loose dishes, utensils, or foreign objects.
   Observe: Any loose items are identified and removed.
   Means: Objects may be causing vibration or impact noise.
   Next: Step 3
3. Inspect the Filter
   Do: Locate and remove the filter at the bottom of the tub. Clean it thoroughly.
   Observe: The filter is clogged with debris.
   Means: A clogged filter can restrict water flow and cause noise.
   Next: Step 4
4. Examine the Pump and Motor
   Do: Look for obstructions in the pump and check the motor for damage.
   Observe: Debris in the pump or a damaged motor is found.
   Means: Obstructions or motor issues can create loud noises.
   Next: Step 5
5. Check the Drain Hose
   Do: Inspect the drain hose for kinks or clogs.
   Observe: The hose is kinked or partially blocked.
   Means: Restricted drainage can cause noise during the drain cycle.
   Next: Step 6
6. Test the Dishwasher
   Do: Plug the unit back in and run a short cycle.
   Observe: The noise is gone or reduced.
   Means: The issue was likely resolved.
   Next: Finish

Common causes

Parts matching

If you need to replace parts, look for these components based on your symptoms:

• Filter: If the filter is clogged or damaged
• Pump assembly: If there’s a loud grinding or humming noise from the pump
• Drain hose: If the noise occurs during the drain cycle
• Motor: If the noise is a constant hum or clicking and the dishwasher isn’t running properly
• Mounting hardware: If the dishwasher vibrates excessively and is not level

Always refer to your owner’s manual for part numbers and installation instructions.

When to call a professional

• The noise persists after cleaning the filter and removing obstructions
• You hear a burning smell or sparks
• The dishwasher does not start or drain after troubleshooting
• You suspect a faulty motor or pump and lack the tools to replace them
• You’re unsure about electrical connections or internal components

FAQ

Related guides

• dishwasher not draining properly
• dishwasher making grinding noise
• dishwasher is making a loud noise

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