LG Washing Machine Error Code SE — What It Means & How to Fix It

What Does This Error Mean?

The SE error means the motor sensor in your LG washing machine has a problem. The sensor that monitors the motor's speed and position is not sending correct signals. Without accurate motor data, the washer cannot spin or agitate properly and stops for safety.

Affected Models

LG WM3900HWA
LG WM4000HWA
LG WT7300CW
LG WM2250CW
LG WM8100HVA

Common Causes

The motor sensor (also called the hall sensor) has failed or become disconnected
The wiring between the motor sensor and the main control board has a loose or broken connection
The stator or rotor assembly in the motor has debris or damage interfering with the sensor
A power surge damaged the motor sensor electronics
The main control board is not receiving the signal from the motor sensor due to a board fault

How to Fix It

Unplug the washer from the wall outlet and wait 5 minutes. Then plug it back in and try running a cycle.

A power reset can clear a temporary sensor glitch caused by a power fluctuation.
Check if the drum spins freely by hand with the washer turned off. Open the door and try rotating the drum.

If the drum feels stuck or grinds, there may be an object jammed between the drum and the tub.
Run the LG diagnostic test cycle. Press and hold the Spin Speed and Soil Level buttons simultaneously, then press the Power button.

The diagnostic cycle tests individual components. The error code displayed can help pinpoint whether the sensor or motor is the problem.
If you are comfortable with appliance repair, unplug the washer, remove the back panel, and check the wiring connector on the motor sensor.

The motor sensor is a small component mounted on the stator at the back of the drum. Look for loose or disconnected wires.
If the wiring looks secure and the error persists, the motor sensor likely needs replacement. Contact a technician or order the part for your specific model.

Search your model number followed by 'hall sensor' or 'motor sensor' to find the correct replacement part.

When to Call a Professional

The SE error usually requires a technician to diagnose and repair. The motor sensor itself is an inexpensive part — typically $10 to $30. However, the labor to access and replace it costs $100 to $200. If the main control board is at fault instead, the repair cost is $250 to $500 total. Contact LG support at 1-800-243-0000 to schedule a service visit.

Frequently Asked Questions

What is a motor sensor and what does it do?

The motor sensor (hall sensor) is a small electronic device attached to the washer's motor. It tells the control board how fast the motor is spinning and in what direction. Without this information, the washer cannot control spin speed or switch between agitate and spin modes.

Can I replace the motor sensor myself?

If you are handy with basic tools, yes. The motor sensor is accessible from the back of the washer. You need to remove the back panel, disconnect the old sensor, and connect the new one. However, if the control board is the actual problem, replacing the sensor will not help.

Is the SE error the same as the LE error?

No. SE means the motor sensor is malfunctioning — the washer cannot read motor data. LE means the motor is locked or overloaded — the motor itself cannot turn. They have different causes, but both prevent the washer from spinning.