LG Washer Error Code: AE — What It Means
The AE error on an LG washer (sometimes shown as “AE” or “Ae”) indicates an automatic error related to the washer’s water-level detection or leak/flood sensing systems. In plain terms, the machine has detected an abnormal condition involving water — for example, an unexpected high water level, a mismatch between actual water level and the expected reading, or moisture in the machine base. When this happens the washer will typically stop the current cycle and display the AE code to protect the appliance and your home.
Why it occurs: the washer uses a combination of a pressure (water-level) sensor, inlet valves, hoses, a drain path and internal moisture/flood sensors to manage water. If one of those components is blocked, kinked, malfunctioning or shorted — or if wiring or the control board miscommunicates — the machine can think there is a dangerous water condition and trigger AE. Common user impacts include interrupted cycles, inability to spin or drain, excess water in the drum, longer overall cycle times because the unit is attempting retries, and in severe cases risk of leakage or water damage to floors.
Common Causes
- Faulty or clogged pressure (water-level) hose between the tub and the pressure sensor
- Defective pressure sensor / water-level switch
- Malfunctioning water inlet valve causing overfill or erratic filling
- Drain pump blockage or failure that prevents correct water-level sensing
- Water in the base (flood sensor triggered by a leak)
- Wiring issues or loose connectors to sensors or the main control board
- Faulty main control board (PCB) or software glitch
- Kinked or collapsed supply or drain hoses causing irregular pressures
- Incorrect installation (improper leveling or venting) causing abnormal behavior
Troubleshooting Steps
- Power cycle the washer: unplug for 5 minutes or switch off the breaker, then plug back in and run a short test cycle — transient faults sometimes clear.
- Check for visible leaks or water in the base: pull the washer away from the wall and inspect the floor and underside for moisture; wipe and allow to dry. If the flood sensor was triggered, the machine may need professional drying and inspection.
- Verify inlet and drain hoses: ensure supply hoses are fully connected and not kinked; check the drain hose for clogs or incorrect installation height.
- Inspect and clean inlet filters/screens: turn off water, disconnect hoses and clear debris from the inlet screens that can cause erratic flow.
- Examine the pressure hose: locate the small rubber hose that runs from the tub to the pressure sensor; remove and inspect it for clogs, pinches, or detachment and replace if cracked.
- Test the drain pump: clear foreign objects and lint from the pump and filter; verify pump runs when commanded. A blocked or failed pump can trip AE logic.
- Check wiring and connectors: look for loose, corro