LG Dishwasher: loud whirring

Professional Repair Guide

What is this symptom?

Is your LG dishwasher producing a loud whirring noise during wash or rinse cycles? This unusual sound can indicate potential issues such as a clogged pump filter or debris in the sump. Understanding the source of the noise is crucial for effective troubleshooting and ensuring your appliance operates quietly and efficiently.

Urgency: Medium

Possible Causes

Clogged pump filter/sump debris

How to Identify: Noise accompanied by inefficient water circulation; debris visible in bottom of dishwasher when filter removed.

Part: Pump filter / sump area

Spray arm interference or obstruction

How to Identify: Noise correlates with spray arm contact against dishes or blockage, loud whirring as arms spin.

Part: Spray arms

Next step

Choose the next step for loud whirring

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Spray Arm

Rotates and sprays high-pressure water to clean dishes inside the tub.

Typical part-only price: $20 - $55
DIY difficulty: Easy
Estimated time: 5-10 mins

Optional: enter your model number

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Model number required

Model-compatible Dishwasher parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply

Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Preventive Maintenance

Clean filter regularly: Debris buildup that leads to pump noise
Frequency: monthly
Inspect spray arms: Spray arm blockage and noise due to obstruction
Frequency: monthly

Frequently Asked Questions

Why is my LG Dishwasher loud whirring?

The loud whirring could be due to a clogged pump filter or obstruction in the spray arm.

How do I fix LG Dishwasher loud whirring myself?

Currently, there are no DIY solutions available for this issue.

How much does it cost to fix loud whirring?

Professional repair costs may vary, but specific costs are not listed.

When should I call a technician for loud whirring?

If the noise persists, contact a technician to assess the problem promptly.

References & Sources

LG Dishwasher Loud Noise Solutions Community

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

Faulty motor bearings
Debris in the impeller or pump
Worn-out wash motor

User Suggested Solutions

Inspect and clean the impeller and pump area. Remove any debris that may be causing the noise. Ensure all components are securely attached.
Check the motor bearings for wear. If they are damaged, replace the bearings. This may require disassembling parts of the dishwasher.
If the wash motor is worn out, replace it with a new one. Ensure to disconnect power and water supply before starting the replacement.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

Do I fix my motor or just replace my dishwasher?

Community Discussions

loud whirring sound

Consider replacing the dishwasher with a Bosch model instead of repairing the LG motor.