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Error code reference

Samsung Washer Error Code 1DC1

Door lock error on the upper washer

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What the 1DC1 error code actually means

Your Samsung washer is showing an error because it cannot confirm that the upper washer door is properly locked. This is usually caused by a loose or damaged wire connection at the door lock mechanism. The washer will not run until this issue is resolved, since the machine needs to know the door is safely closed before starting.

Diagnostic procedure

The full 1DC1 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check door lock switch 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 1DC1

Ranked by how often they cause this code
  1. 1Loose or disconnected door lock switch terminal
  2. 2Incorrectly connected terminal
  3. 3Broken or damaged terminal
  4. 4Damaged wiring harness
  5. 5Failed door lock switch assembly

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Questions people ask about 1DC1

What does 1DC1 mean on a Samsung washer?
The 1DC1 code indicates a door lock error on the upper washer unit. It means the control board is not receiving a proper signal from the door lock switch, which is typically caused by a terminal that is connected incorrectly or is broken. The washer will not operate until the door lock circuit issue is resolved.
Is it safe to use my Samsung washer when the 1DC1 error is displayed?
No, you should not attempt to run the washer while the 1DC1 error is active. This code indicates the machine cannot confirm the door is properly locked, which is a safety-critical function. The washer is designed to prevent operation under these conditions to avoid potential hazards.
How much does it cost to repair a 1DC1 door lock error on a Samsung washer?
If the fix is simply reseating a loose terminal, there may be no parts cost involved, though a service call fee typically applies if a technician performs the repair. If the door lock switch assembly needs replacement, parts and labor costs generally range from around $100 to $250 depending on your location and the service provider. Diagnosing the wiring harness for breaks may add additional labor time to the total cost.
How do I fix the 1DC1 error on my Samsung washer?
Start by inspecting the door lock switch terminal connections on the upper washer. Make sure the connector is fully seated, free of corrosion, and that no pins are bent or damaged. If the connections look good, check the wiring harness for breaks or shorts, and test continuity with a multimeter. If the wiring is intact, the door lock switch assembly itself may need to be replaced.
Will resetting my Samsung washer clear the 1DC1 error?
A reset may temporarily clear the code, but it will return as soon as the washer attempts to use the door lock circuit again if the underlying issue has not been fixed. The fault must be resolved at the source, either by correcting the terminal connection or replacing damaged components, before the code will stay cleared.

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