Samsung Washer Error Code dC3

The dC3 code indicates a door lock switch electrical fault. It is triggered when the main PCB detects that the door lock switch terminal is connected incorrectly, is broken, or is delivering an unreliable signal due to wire leakage. The washer stops operation until the fault is resolved. In some cases, a failed main PCB door sensing circuit can also produce this code.

No, you should not attempt to run the washer while this error is active. The dC3 code means the washer cannot confirm that the door is securely locked, and operating it in this state could allow the door to open during a cycle, posing a water and personal safety risk. Diagnose and repair the fault before resuming use.

Repair costs vary depending on the faulty component. If only the terminal connector needs reseating or minor repair, the cost may be minimal. Replacing the door lock switch typically runs in the range of $30 to $100 for the part, plus labor if a technician is hired. A main PCB replacement is the most expensive scenario, with parts generally ranging from $150 to $350 or more depending on the model.

In many cases, yes. Start by unplugging the washer and inspecting the door lock switch terminal connector for loose, bent, or corroded pins, then reseat the connector firmly. Check the wiring along the door lock circuit for any visible damage or chafing. If the connector and wiring look intact, the door lock switch itself may need to be replaced, which is a moderate DIY repair.

A reset may temporarily clear the code, but if the underlying problem in the door lock switch terminal or wiring is still present, the error will return. Intermittent dC3 errors that come back after a reset are a strong indicator of wire leakage or a connection issue that needs physical inspection and repair.