LG Washer Error Code 1dC1

The 1dC1 code indicates a door lock error on the upper washer unit. Specifically, it means the control board has detected that the door lock switch terminal is either connected incorrectly or has a break in the circuit. The washer will not operate until the door lock signal is restored to a valid state.

No, you should not attempt to run the washer while this error is present. The 1dC1 code means the machine cannot confirm the upper door is properly locked, which is a critical safety interlock. Operating the washer without a functioning door lock creates a risk of the door opening during a cycle.

If only a terminal reconnection or cleaning is needed, there may be no parts cost, though a service call typically runs between $75 and $150 for labor. If the door lock switch itself has failed, the replacement part generally costs between $20 and $60, with total repair costs including labor ranging from $100 to $200 depending on your area and service provider.

Start by unplugging the washer and locating the door lock switch connector on the upper unit. Check that all terminals are fully seated, free of corrosion, and undamaged. If the connections look good, use a multimeter to test the door lock switch for continuity. A failed switch will need to be replaced to clear the error.

A power reset may temporarily clear the code, but if the underlying wiring or switch fault is still present, the error will return as soon as the washer attempts to lock the door again. The root cause, whether a loose terminal or a failed switch, must be corrected for the code to stay clear.