LG Dishwasher AE Error Code — What It Means
The AE error (sometimes displayed as AE/E1 on certain models) means your LG dishwasher has detected water or moisture in the base leak pan beneath the tub. A float switch in the pan trips when water accumulates and signals the control board to halt operation as a safety measure. This code does not always mean a catastrophic leak. Water can collect in the base from splashing, condensation, an unlevel installation, or a genuine leak from a hose, pump seal, or tub component. The dishwasher will not run normally until the water is removed and the underlying cause is corrected.
Common Causes
- Dishwasher not level If the unit sits unevenly, water can pool in the wrong areas and eventually drip into the base pan, tripping the float switch.
- Dirty or damaged door gasket A gasket clogged with food debris or torn can allow water to escape the tub and run down into the base.
- Clogged or damaged spray arms Blocked spray jets or cracked arms can redirect water forcefully enough to splash over the tub edge and into the pan.
- Drain hose leak or restriction A split, loose, or kinked drain hose can cause water to leak into the base or back up during drainage.
- Internal leak from pump or tub plumbing Worn pump seals, cracked hoses, or loose fittings inside the cabinet can release water directly into the base pan.
- Excess suds from incorrect detergent Using too much detergent or the wrong type can create foam that overflows the tub and drips into the base.
Step-by-Step Fix
- Disconnect power at the breaker or unplug the dishwasher before starting any inspection.
- Remove the toe-kick panel at the bottom front of the unit and look inside the base pan for standing water, dampness, or residue.
- Remove all water from the base pan using towels, a sponge, or a wet-dry vacuum, then dry the pan completely.
- Check that the dishwasher is level by placing a carpenter’s level inside the empty tub front-to-back and side-to-side, then adjust the front and rear leveling feet until the tub sits evenly.
- Inspect the door gasket around the tub opening for food buildup, tears, or gaps, and clean it with a damp cloth or replace it if damaged.
- Remove and inspect the spray arms for clogs, cracks, or loose mounting, then clean all spray holes with a toothpick or small brush.
- Examine the drain hose from the dishwasher to the sink drain or disposal for kinks, splits, loose clamps, or blockages, and check the sink drain itself for restrictions.
- Restore power and reset the dishwasher by holding the Start or Cancel button for about five seconds, or power-cycle the unit by turning the breaker off and on.
- Run a short test cycle with no dishes and watch for leaks around the door, base, and drain connections, then confirm the AE code does not return.
Parts Often Needed
| Part | Notes |
|---|---|
| Door gasket / door seal | Amazon | Replace if torn, stiff, or unable to seal evenly around the tub opening. |
| Float switch / leak detection switch | Amazon | Located in the base pan. Replace if water is clear but the code persists after drying. |
| Drain hose | Amazon | Replace if split, cracked, or connections are leaking. |
| Spray arm assembly | Amazon | Replace if cracked, warped, or cleaning does not restore proper spray pattern. |
When to Call a Pro
Call a professional if you have removed all water and corrected obvious issues but the AE code returns immediately, if you find water but cannot locate the leak source after inspecting hoses and gaskets, or if the leak appears to come from the circulation pump or internal tub plumbing that requires disassembly of the lower cabinet. A technician has the tools to pressure-test the tub, inspect sump seals, and replace pump components safely. Also call if you are uncomfortable working around water and electricity or if your dishwasher is still under warranty.