LG Dishwasher Error Code AE – Step-by-Step Troubleshooting Guide

Step 1: Understand the Error

LG dishwasher error code AE means the dishwasher’s leak detection system has been activated. Water has collected in the bottom tray, triggering the float switch. To prevent flooding, the dishwasher stops washing and may keep draining.

Simply put: AE = water leak or moisture in the base.

This safety feature is built into most LG dishwashers.

Step 2: Immediate Safety Actions

• Turn off the dishwasher power at the breaker

• Shut off the water supply

• Do not restart the dishwasher until the issue is checked

This prevents further water damage or electrical risk.

Step 3: Remove Trapped Water

1. Carefully pull the dishwasher out

2. Place towels under and around the unit

3. Gently tilt the dishwasher forward or sideways

4. Allow all trapped water to drain from the base

5. Leave the dishwasher unplugged for 12–24 hours to dry

In many cases, this alone clears the AE error.

Step 4: Identify the Leak Source

Check the following areas carefully:

• Door gasket for cracks or misalignment

• Inlet and drain hoses for leaks or loose clamps

• Detergent dispenser for overflow

• Filter area for blockages causing water splash

• Signs of excess foam or soap residue

Even a small leak can trigger AE.

Step 5: Common Triggers You Might Miss

• Using regular dish soap instead of dishwasher detergent

• Overusing detergent

• Overloading dishes blocking spray arms

• Recently moving or tilting the dishwasher

• High water pressure causing overfill

These issues often cause temporary AE errors.

Step 6: Restart and Test

• Reconnect power and water

• Run a short wash cycle

• Observe for leaks during operation

If AE does not reappear, the problem is resolved.

Step 7: When AE Keeps Coming Back

You likely need professional help if:

• AE returns repeatedly

• Water leaks during every cycle

• Dishwasher drains continuously

• You notice water pooling under the unit

Persistent AE usually means a faulty inlet valve, hose, or internal seal.

Prevention Checklist

✔ Use dishwasher-safe detergent only
✔ Clean filters weekly
✔ Inspect door seals monthly
✔ Avoid overloading
✔ Do not move dishwasher with water inside
✔ Run maintenance wash monthly

LG dishwasher error code AE is a leak-protection warning, not a random fault. Many AE errors are caused by trapped water, excess soap, or minor leaks and can be fixed at home. If the error keeps returning, it’s a sign of an internal leak that should be repaired quickly to avoid damage.

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