Samsung Ovens & Ranges

Error Code C-d1

Door lock mechanism malfunction or misalignment

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-d1

What This Means

Door lock harness disconnected; Door lock motor resistance incorrect; Door locking switch failure; Insufficient voltage to lock motor

What actually causes this:

Worn motor, loose connections, switch failure, or mechanical binding

First Thing to Check

Verify door lock harness is fully connected to both motor and switch

Parts Involved

Door Lock MotorDoor Lock SwitchWire Harness

How to Fix

  1. 1

    Check harness connection between door lock and motor

  2. 2

    Measure door lock motor resistance (normal 1600-2200 ohms at room temp)

  3. 3

    Measure voltage at door lock motor (normal AC 120V)

  4. 4

    Test door locking switch operation

This Error Applies To

Samsung DOC30P977D Series Ovens & Ranges

Service manual exact match: NQ70M9770DService manual exact match: DOC30P977DService manual exact match: NQ70M7770D

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