LG · Dishwasher Serious

AE — Leak Detected (Aqua Error)

AE (Aqua Error) means the leak sensor in the base pan detected water — the dishwasher shut down and is pumping to prevent a flood.

Keep using it?
Limited use only
DIY difficulty
Moderate
Typical cost
$25-60
Verified against
lg.com ↗

The fix

Leak / flood sensor (base pan float)

Leak detected in base pan

$25-60 moderate difficulty 75 min Tools: screwdriver, nut driver, towels

Diagnose first: Real leak from a hose, pump seal, or sump gasket trips the float; dry the pan and inspect plumbing before replacing the sensor.

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How to fix it

  1. Unplug the dishwasher and pull it out to inspect the base pan.
  2. Dry the base and run a short cycle, watching for the leak source.
  3. Tighten hose clamps and inspect the pump seal and door gasket.
  4. Replace the leaking component.

Why it happens

Typical signs: Dishwasher stops and pumps continuously · Water under or around the unit · AE on the display

  • Leak at a hose or pump seal A worn pump seal, loose hose clamp, or cracked fitting drips into the base pan.
  • Door gasket leak A damaged door seal lets water escape the tub.
  • Faulty float/leak sensor Rarely, a bad sensor false-triggers.

Other parts sometimes needed

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • LG Dishwasher Door Gasket / Seal Common replacement
    Amazon →

Related repair guides

Dishwasher Leaking From the Bottom of the Door →

More LG dishwasher codes

2H 2H — Delay-start indicator (2 hours remaining) bE bE — Bubble / oversuds error CE CE — Motor / communication error CL CL — Child lock / control lock active CR CR — Test / calibration mode E1 E1 — Leak detected (newer display label)

All LG codes → All dishwasher codes →

Frequently asked questions

What does the AE code mean on a LG dishwasher?

AE (Aqua Error) means the leak sensor in the base pan detected water — the dishwasher shut down and is pumping to prevent a flood.

What causes the AE code on a LG dishwasher?

Leak at a hose or pump seal: A worn pump seal, loose hose clamp, or cracked fitting drips into the base pan. Door gasket leak: A damaged door seal lets water escape the tub. Faulty float/leak sensor: Rarely, a bad sensor false-triggers.

Is it safe to keep using a LG dishwasher with a AE error?

Limited use only. This is rated a serious-severity fault.

How do I fix AE on a LG dishwasher?

Unplug the dishwasher and pull it out to inspect the base pan. Dry the base and run a short cycle, watching for the leak source. Tighten hose clamps and inspect the pump seal and door gasket.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.