LG Washer Error Code SE

SE stands for a locked motor error on LG washers. It means the control board cannot properly communicate with the motor, typically due to a disconnected or faulty connector in the motor harness, a cut wire, or a defective hall sensor. The machine stops the cycle to prevent motor damage. Checking the 3-pin connector at the stator assembly and the 4-pin connector at the main PWB are the first steps in diagnosis.

No, you should not continue running the washer while the SE error is active. The error indicates the motor control circuit is compromised, and operating the machine in this condition could damage the motor, main PWB, or other components. Stop use and diagnose the fault before running another cycle.

A reset may temporarily clear the SE error from the display, but the code will return as soon as the washer attempts to run if the underlying fault has not been corrected. Resetting without addressing the connector, harness, or hall sensor issue is not a solution. Use the reset only after completing the necessary repairs to confirm the error has been resolved.

In many cases, yes. If the cause is a loose 3-pin white connector at the stator assembly or a loose 4-pin connector at the main PWB, reseating those connections requires basic mechanical ability and no special tools. If the motor harness is cut or the hall sensor has failed, repairs become more involved and may require soldering or component replacement, which is better suited for experienced DIYers or a qualified technician.

If the fix is simply reseating a loose connector, there is no parts cost and only minimal labor time involved. Replacing a damaged motor harness typically costs between $30 and $90 for the part, plus labor if a technician is hired. A hall sensor replacement generally runs between $20 and $60 for the part. Total repair costs including professional labor can range from $100 to $300 depending on the specific fault and your location.