Which part is usually at fault for LG error E1?

The most commonly implicated component is the flow switch.

What is the first thing to try for LG error E1?

Confirm the door seals fully and the unit is level, then unplug and let it dry completely so the flow switch resets.

Error E1 Stops machine US market

E1 on a LG dishwasher usually means: Overfill or leak protection was triggered by the flow switch.

Fix it fast: Dry out the flow switch. Full ranked steps below.

Manufacturer source Updated Oct 17, 2026 View source

Try these in order. Stop when the code clears.

1 Dry out the flow switch
Moderate
- Confirm the door seals fully and the unit is level, then unplug and let it dry completely so the flow switch resets.
Source

Excess suds formed from the wrong detergent or an unlevel installation.

The child-lock or control-lock feature is engaged. On a LG Dishwasher, code CL points to the control panel.

The tub filled beyond the safe level and drained automatically.

A water-heating fault was detected. On a LG Dishwasher, code HE points to the heating element.

Insufficient water reached the tub within the fill window. On a LG Dishwasher, code IE points to the water inlet valve.

A drive-motor fault or wiring-harness problem was detected. On a LG Dishwasher, code LE points to the wash motor.

Have a different code? Look it up instantly.