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Error code · Washer

Samsung Washer Code ddC / dC3: Add Door Not Locked

Samsung washers with a digital display and an Add Door, front-load and top-load, show ddC or dC3 when the Add Door is not detected as closed and locked. The Add Door is the small door that…

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Code
ddC / dC3
Appliance
Washer
Brand
Samsung
Warranty
30-day workmanship

What ddC / dC3 means

Samsung washers with a digital display and an Add Door, front-load and top-load, show ddC or dC3 when the Add Door is not detected as closed and locked. The Add Door is the small door that lets you drop in items after a cycle has started. The listing names no models, so this applies to Samsung washers with that feature. The cycle may pause or refuse to start until the small door registers as secure.

Common causes of ddC / dC3

  • Add Door latch alignment
  • Something caught in the Add Door seal
  • Add Door lock switch reading
  • Wiring to the Add Door lock
✓ One safe check you can try

1. Open the Add Door and check that nothing is caught in the seal or the latch. 2. Close it firmly until it is fully secure. 3. Restart the cycle. 4. If the Add Door looks damaged or the code returns, request service.

! Why to stop there
  • A damaged latch can look fine until it is tested under closing force.
  • We check the Add Door lock switch and its wiring.
  • We confirm the main door is not the real cause by testing both.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
→Same appliance

Other Washer codes

Cold / Eco WarmSamsung Washer Cold or Eco Warm Lights Blinking: Stuck Button Extra Large / Extra High / Large / High blinkingSamsung Washer Extra Large, Extra High, Large, or High Lights Blinking: Water Not Filling Hot & Cold / Hot & Eco WarmSamsung Washer Hot and Cold, or Hot and Eco Warm Lights Blinking: Motor Error Hot / Hot & Extra Large / Hot & Extra High / Hot & Large / Hot & HighSamsung Washer Hot, or Hot with a Level Light Lights Blinking: Door Not Locked Hot & Medium / Hot & MidSamsung Washer Hot and Medium, or Hot and Mid Lights Blinking: Heater Error Hot & Small / Hot & LowSamsung Washer Hot and Small, or Hot and Low Lights Blinking: Hoses Swapped Hot & Tap Cold / Hot & CoolSamsung Washer Hot and Tap Cold, or Hot and Cool Lights Blinking: MEMS Sensor Error Hot & WarmSamsung Washer Hot and Warm Lights Blinking: Unbalanced Load
ddC / dC3ddC / dC3 questions
What is the Add Door?

It is the small door in the main door that lets you add items mid-cycle. ddC means the control did not detect that small door as closed and locked.

Are ddC and dC3 handled alike?

Both appear in the same Add Door group, depending on how the model's display shows the characters. We handle them together. Telling us the exact characters on your display helps us confirm which model behavior applies.

Why does it happen after adding a sock?

A small item caught in the seal can stop the latch from fully seating. Opening, clearing, and closing firmly often fixes it. Check the seal around the small door for lint or a stray fabric edge before you close it again.

Book a visit

Still seeing ddC / dC3?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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