Samsung · Washer Moderate

dC — / DC — Door Will Not Lock

dC (Door Check) means the washer started a cycle but the door is not locked/closed, or the lock could not be confirmed.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Typical cost
$30-60
Verified against
samsung.com ↗

The fix

Door lock assembly (interlock)

Door not closing / lock error during cycle

$30-60 moderate difficulty 45 min Tools: screwdriver, torx bit

Diagnose first: Verify door fully latches mechanically before electrical diagnosis. Door strike can also wear and need replacement.

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How to fix it

  1. Firmly close the door, clearing any laundry from the seal.
  2. Power-cycle the washer.
  3. If dC returns, test and replace the door lock assembly.

Why it happens

Typical signs: Cycle will not start · dC or DC on the display

  • Door not fully latched Laundry caught in the gasket or a door that did not click shut.
  • Failed door lock The electronic door lock has failed.

Related repair guides

Front-Load Washer Door Won't Open — How to Fix It →

More Samsung washer codes

3C 3C / 3E — Motor Fault 4C 4C / 4E — Water Supply Error 4C2 4C2 — Hot water connected to cold inlet 4E 4E — Water supply error (older code, same as 4C) 5C 5C / 5E / SC — Will Not Drain 5E 5E — Drain error (older code, same as 5C)

All Samsung codes → All washer codes →

Frequently asked questions

What does the dC code mean on a Samsung washer?

dC (Door Check) means the washer started a cycle but the door is not locked/closed, or the lock could not be confirmed.

What causes the dC code on a Samsung washer?

Door not fully latched: Laundry caught in the gasket or a door that did not click shut. Failed door lock: The electronic door lock has failed.

Is it safe to keep using a Samsung washer with a dC error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix dC on a Samsung washer?

Firmly close the door, clearing any laundry from the seal. Power-cycle the washer. If dC returns, test and replace the door lock assembly.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.