Why Is My Dishwasher Leaking? Troubleshooting Guide

A leaking dishwasher can be a frustrating (and messy) problem. Water damage can harm your floors and cabinets, so it’s important to address leaks quickly. But before you call a repair technician, there are several common causes and simple fixes you can try yourself.

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Common Causes of a Leaking Dishwasher & How to Fix Them

1. Door Seal (Gasket) Damage

Signs: Water pooling around the front of the dishwasher.
Solution:

• Inspect the rubber door gasket for cracks, tears, or food debris.
• Clean it with a damp cloth and check for proper alignment.
• If damaged, replace the gasket (available from appliance parts stores).

2. Loose or Faulty Door Latch

Signs: Water leaking from the sides when running.
Solution:

• Ensure the door closes tightly and latches securely.
• Adjust or replace the latch if it’s broken.

3. Clogged or Misaligned Drain Hose

Signs: Leaking underneath the dishwasher.
Solution:

• Check the drain hose for kinks, cracks, or blockages.
• Ensure it’s properly connected to the sink drain or garbage disposal.
• Replace the hose if damaged.

4. Worn-Out Pump or Pump Seal

Signs: Water leaking from the bottom during cycles.
Solution:

• Locate the pump (usually at the bottom of the dishwasher).
• Inspect for cracks or worn-out seals.
• If leaking, the pump may need replacement.

5. Overfilled Detergent or Wrong Detergent

Signs: Sudsy leaks or excessive bubbles.
Solution:

• Use only dishwasher-specific detergent (not regular dish soap).
• Avoid overfilling the detergent dispenser.

6. Cracked or Loose Tub

Signs: Persistent leaks from inside the dishwasher.
Solution:

• Inspect the interior tub for cracks.
• If found, professional repair or replacement may be needed.

7. Faulty Water Inlet Valve

Signs: Leaking when filling with water.
Solution:

• Check the valve for cracks or loose connections.
• Replace if necessary.

8. Improper Installation or Leveling

Signs: Leaks only during certain cycles.
Solution:

• Ensure the dishwasher is level (adjust the feet if needed).
• Check that it’s securely installed under the counter.

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When to Call a Professional

If you’ve tried these fixes and your dishwasher is still leaking, it may be time to call an appliance repair technician. Issues like a cracked tub, major pump failure, or electrical problems should be handled by a professional.

Prevent Future Leaks

Regular Maintenance – Clean filters and check hoses monthly.
Use the Right Detergent – Avoid hand soap or excessive detergent.
Inspect Seals & Hoses – Replace worn parts before they cause leaks.