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LG Dishwashers Leaking: How to Fix It Yourself

A leak from your LG Dishwasher is usually caused by a loose connection, a worn gasket or seal, or a clogged drain. Finding and fixing the source of the leak is usually straightforward and inexpensive.

Medium15-45 minutesParts: $0-$20

Tools Needed

TowelsShallow panOld toothbrushPhillips screwdriver

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⚠️ Safety First

  • Turn off the dishwasher and unplug it or flip the circuit breaker before working on it.
  • Have towels ready — there may be standing water inside.

Before You Start

Parts You May Need

Replacement Seal/Gasket

~$8-$15

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Step-by-Step Repair

  1. Step 1 of 6
    1

    Identify where the leak is coming from

    Dry up any standing water, then place paper towels or newspaper around the base of the unit. Run a short cycle and watch carefully to identify exactly where the water is coming from. This is the most important step.

  2. Step 2 of 6
    2

    Check all hose connections

    Inspect every hose connection — inlet, outlet, and drain. Tighten any loose fittings by hand. Look for cracked or worn hoses that need replacement (usually $10-$20).

  3. Step 3 of 6
    3

    Inspect seals and gaskets

    Check the door seal, gaskets, and O-rings. Look for cracks, tears, warping, or buildup. Clean seals with warm soapy water. Replace any that are visibly damaged.

  4. Step 4 of 6
    4

    Check the drain system

    Make sure the drain isn't clogged. Clean any accessible filters or drain traps. A backup in the drain can cause water to overflow from unexpected places.

  5. Step 5 of 6
    5

    Level the unit

    If the unit isn't level, water can pool and leak from places it shouldn't. Use a bubble level on top and adjust the feet until it's even.

  6. Step 6 of 6
    6

    Test and monitor

    After making repairs, run a full cycle and watch for leaks. Place a dry towel underneath to easily spot any remaining drips.

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If That Didn't Work

  • The drain pump may be clogged or failing.
  • The spray arms could be blocked — remove and clean them.
  • The water inlet valve may need replacement if water supply is the issue.

When to Call a Professional

If cleaning filters, spray arms, and checking the drain hose doesn't fix it, the issue may be a faulty pump motor or control board. Professional repair runs $100-$200. Compare that to the cost of a new unit if yours is over 7 years old.

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Disclaimer: This guide is for informational and educational purposes only and does not constitute professional repair advice. All repairs are performed at your own risk. RepairItFree.com is not liable for any personal injury, property damage, device damage, voided warranties, or other losses resulting from the use of this information.

If you are unsure about any step — especially anything involving electricity, gas, water, or refrigerant — stop and consult a qualified professional. Your safety is more important than saving money.

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