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LG·dishwasherhigh severity
LG dishwasher Error Code AE
Leak detected / float switch
Common Causes
- 1Internal leak
- 2Door seal failure
Water leaks from dishwashers can damage hardwood floors and subflooring before becoming visible. If AE codes are recurring, inspect the subfloor under the unit for soft spots or mold.
Step-by-Step Troubleshooting
- 1
Turn off the dishwasher and check under the unit for standing water — the AE code triggers from a float switch in the base pan
- 2
Remove the lower kickplate panel and use towels to soak up any water in the base pan, then identify the leak source
- 3
Inspect the door gasket (rubber seal around the door opening) for tears, gaps, or hardening from age and detergent exposure
- 4
Check the spray arm seals, pump connections, and the water inlet valve for drips — run a short cycle with the kickplate removed to observe
- 5
If water appears at the tub-to-sump junction, the main wash pump gasket has failed and needs replacement
Pro Diagnostic Tip
LG dishwashers use a styrofoam float in the base pan rather than an electronic sensor. If the float gets stuck in the raised position from detergent residue buildup, AE will trigger even without an actual leak. Rinse the float and the guide channel with warm water before ordering parts.
You Might Also Notice
- •Water pooling under dishwasher
- •Dishwasher stopping mid-cycle
- •Musty smell from under the unit
- •Water damage visible on adjacent cabinets
Parts, Cost & Difficulty
Repair Difficulty
Hard — Advanced Skills RequiredEstimated Repair Cost
$150–$320
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
ADX73550623 (Door Gasket)AJU72992601 (Water Inlet Valve)ABQ75742504 (Pump Gasket Kit)
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
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Error code AE is a high-severity issue that can cause further damage to your dishwasher if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does LG error code AE mean?
LG error code AE indicates: Leak detected / float switch. This is a high-severity issue affecting your dishwasher.
How do I fix LG error code AE?
Turn off the dishwasher and check under the unit for standing water — the AE code triggers from a float switch in the base pan Then, Remove the lower kickplate panel and use towels to soak up any water in the base pan, then identify the leak source Then, Inspect the door gasket (rubber seal around the door opening) for tears, gaps, or hardening from age and detergent exposure There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dishwasher has error AE?
Besides the error code on the display, common signs include: Water pooling under dishwasher; Dishwasher stopping mid-cycle; Musty smell from under the unit. If you notice any of these symptoms, check your dishwasher's display panel for error code AE.
How much does it cost to fix LG AE?
Repair costs for LG AE typically range from $150 to $320 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.