LG Washer Error Code 1OC

The 1OC code on an LG washer indicates an overflow error in the upper washer unit. It means the machine detected that water was being supplied continuously because the water level detection system was not working properly. The error points to a problem with either the water inlet valve or the water level sensor. You should shut off the water supply and power to the machine until the fault is diagnosed.

No, you should not continue running the washer when the 1OC code is active. The error indicates uncontrolled water filling, which can lead to overflow and water damage to the machine, flooring, and surrounding areas. Turn off the washer and close the water supply valves behind the machine until the issue is resolved.

Repair costs depend on which component has failed. A water level sensor typically costs between $15 and $60 for the part, while an inlet valve generally runs between $25 and $80. If you hire a technician, labor charges will add to those figures, with total repair costs commonly ranging from $100 to $250 depending on your location and the specific parts needed.

Some causes of the 1OC error are DIY-friendly, such as inspecting and reconnecting a loose or kinked water level sensor hose. However, replacing the water level sensor or water inlet valve requires basic electrical testing skills and comfort working inside the machine. If you are not confident testing component resistance or handling internal wiring, a qualified technician is the safer choice.

A power reset may temporarily clear the 1OC code, but the error will return if the underlying fault with the water level sensor or inlet valve has not been corrected. Resetting without repairing the root cause means the overflow condition can recur during the next wash cycle. A lasting fix requires diagnosing and replacing the faulty component.