LG Washer Error Code 1dC

The 1dC code on an LG washer indicates a door error on the upper washer unit, specifically a switch contact error caused by door hook deformation. The machine cannot confirm the door is fully closed and locked because the hook is not properly engaging the door lock switch. This causes the washer to stop or refuse to start as a safety measure.

No, you should not attempt to force the washer to run while the 1dC code is active. The error means the control board cannot confirm the door is securely locked, and operating the machine under that condition poses a risk of the door opening during a cycle. Address the door hook or switch issue before resuming use.

If only the terminal connections need reseating or cleaning, there may be no parts cost at all. Replacing a door hook or door lock switch assembly typically costs between $20 and $80 in parts depending on the specific model. If professional labor is required, total repair costs including parts and service can range from $100 to $250.

Some causes of the 1dC error can be addressed without replacing parts. Start by checking the door lock switch terminal connections for looseness or corrosion and reseat them if needed. If the door hook is visibly bent or deformed, or if the door lock switch has failed, those components will need to be replaced, which is a moderate-difficulty repair for a knowledgeable DIYer.

A reset may temporarily clear the code from the display, but it will return as soon as the machine attempts to verify the door lock again. Because the root cause is mechanical, either a deformed hook or a faulty switch contact, the underlying issue must be corrected for the error to stay cleared.