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Error code reference

Samsung Washer Error Code 1DC

Door error on the upper washer

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What the 1DC error code actually means

Your Samsung washer tried to open the upper drum door but could not confirm the door actually opened, so it stopped and displayed this error to prevent any unsafe situation. This is usually caused by a faulty door sensor, a broken connection in the door locking system, or a door latch that is stuck or not working correctly. A technician will need to check the door lock components to get the washer running again safely.

Diagnostic procedure

The full 1DC procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check door switch resistance and door lock SW terminal connections.
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Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 1DC

Ranked by how often they cause this code
  1. 1Faulty door switch
  2. 2Loose or corroded door lock SW terminal connections
  3. 3Door lock actuator mechanical failure
  4. 4Damaged wiring harness
  5. 5Control board failure

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Questions people ask about 1DC

What does 1DC mean on a Samsung washer?
The 1DC error code on a Samsung washer indicates a door error on the upper washer unit, specifically that the door did not open after a door open operation was commanded. The control board expected confirmation from the door switch that the door had opened, but that confirmation was not received. This causes the washer to stop operation as a safety precaution until the door fault is resolved.
Is it safe to use my Samsung washer while it shows the 1DC error?
No, you should not attempt to run the washer while the 1DC error is active. This code indicates the upper door lock system is not functioning correctly, and operating the washer with an unconfirmed door state poses a risk of the door opening unexpectedly during a cycle. Resolve the door fault before resuming use.
How much does it cost to repair a Samsung washer with the 1DC error?
Repair costs for the 1DC error depend on the root cause. Reseating a connector costs nothing beyond your time. Replacing a door switch or door lock actuator typically runs in the range of $50 to $150 for parts, plus labor if a technician is involved. A full control board replacement, if needed, can push total repair costs to $200 to $400 or more depending on your region and service rates.
Can I fix the 1DC error myself?
Some causes of the 1DC error are DIY-friendly, such as reseating a loose terminal connection at the door lock switch connector or inspecting the wiring harness for visible damage. However, replacing the door switch or door lock actuator requires comfort working with appliance electrical components and some disassembly of the door panel. If you are unsure, contacting a qualified appliance technician is the safest approach.
Will resetting my Samsung washer clear the 1DC error?
A power reset by unplugging the washer for a few minutes may temporarily clear the code if the fault was caused by a transient electrical issue or a momentary poor connection. However, if the underlying cause is a failed door switch, damaged wiring, or a faulty actuator, the error will return. A reset alone is not a fix for a hardware fault.

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