Quick answer: On a Samsung Washer, the dC1 error code means the door lock confirmation failed during the initial fill or start-up phase of a cycle. The washer attempted to lock the door but the control board did not receive confirmation that the lock engaged successfully. The most common causes are a faulty door lock assembly, wiring issues at the door lock connector, or a failing control board. dC1 is a more specific variant of the general dC door error.
The dC1 code on a Samsung Washer is a door lock confirmation failure. Unlike the general dC code which can trigger at any point in a cycle, dC1 specifically occurs at the start of a cycle when the washer attempts to confirm the door lock has engaged before allowing water to enter. This makes dC1 most commonly a mechanical or electrical fault with the door lock assembly rather than a simple door alignment problem.
Follow the steps below one at a time — many error codes can be fixed faster than they look.
Step 1 — Power reset: Unplug the washer for 5 minutes and reconnect. Attempt a cycle. If dC1 clears, it was a temporary locking glitch.
Step 2 — Inspect the door and seal: Open and close the door carefully. Listen for the double-click of the latch engaging and the lock mechanism activating. If you hear the latch click but no second click from the lock actuator, the lock assembly has failed.
Step 3 — Check wiring: Unplug the washer. Locate the wiring harness that runs from the door lock to the main control board. Check connectors for corrosion or looseness. Reconnect and retest.
Step 4 — Replace door lock assembly: If the lock assembly tests faulty (no continuity on the lock switch), replace it. Use your Samsung Washer model number (on the sticker inside the door frame) to identify the correct replacement part.
See the complete list at the Samsung Washer Error Codes Complete Guide.
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