LG Washer Error Code nS

The nS error code means the washer detected that the door was not properly secured before the cycle started. It is a door interlock fault specific to USA variant LG washers. The control board requires a confirmed signal from the door switch before allowing any operation. The machine will not run until the door is fully latched and the switch circuit is functioning correctly.

Resetting the washer by unplugging it for a few minutes may temporarily clear the display, but the nS code will return if the underlying door latch or switch issue is not resolved. Because this error is tied to a real safety circuit, the washer will check the door status at the start of every cycle. A reset alone is not a fix, only a diagnostic step.

If the repair requires only reseating a loose wiring connector, there may be no parts cost involved. Replacing a door latch assembly typically runs in the range of $20 to $80 for the part, depending on the specific model. If a technician is needed for diagnosis and installation, total repair costs including labor generally fall in the range of $100 to $250.

Start by firmly closing the door and listening for a solid click from the latch. If the error persists, unplug the machine and inspect the door latch assembly for visible damage, and check that the wiring connector at the door switch is fully seated and free of corrosion. If the latch or switch is damaged, replacing the door latch assembly is typically the required repair. A technician can use a multimeter to confirm whether the door switch is passing continuity when the door is closed.

No, you should not attempt to force or bypass operation when the nS code is active. The door interlock is a safety feature designed to keep water inside the drum during the wash and spin cycles. Running the machine with an unsecured door could result in water leaks or injury. Address the door latch or switch issue before resuming normal use.