Samsung · Microwave Minor

C-d0 — Door or Key Error

C-d0 (and C-d1/C-d2) means a door or key error — the microwave senses the door or a button as stuck.

Keep using it?
Yes — fix when convenient
DIY difficulty
Easy
Verified against
samsung.com ↗

How to fix it

  1. Open and firmly close the door; make sure nothing blocks it.
  2. Unplug for a minute; if C-d0 persists, the door switches or keypad need service.

Why it happens

Typical signs: Will not start · C-d0 on the display

  • Door switch fault A door interlock switch is mis-reading.
  • Stuck key A control-panel button is stuck.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Samsung Microwave Door Switch Common replacement
    Amazon →

More Samsung microwave codes

5E 5E / SE — Touchpad Shorted (Older Spelling) C-21 C-21 — Cavity Over-Temperature C-22 C-22 — Temperature Sensor Error C-A0 C-A0 — Functional Error C-A1 C-A1 — Functional Error (Damper / Sensing) C-A2 C-A2 — Functional Error

All Samsung codes → All microwave codes →

Frequently asked questions

What does the C-d0 code mean on a Samsung microwave?

C-d0 (and C-d1/C-d2) means a door or key error — the microwave senses the door or a button as stuck.

What causes the C-d0 code on a Samsung microwave?

Door switch fault: A door interlock switch is mis-reading. Stuck key: A control-panel button is stuck.

Is it safe to keep using a Samsung microwave with a C-d0 error?

Yes — fix when convenient. This is rated a minor-severity fault.

How do I fix C-d0 on a Samsung microwave?

Open and firmly close the door; make sure nothing blocks it. Unplug for a minute; if C-d0 persists, the door switches or keypad need service.

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.