Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeC-d2 / Cd2
ApplianceMicrowave
A Samsung microwave that flashes C-d2 (or Cd2) is reporting a door or key error. The neighbours C-d1 and C-d0 are worded identically.
Quick facts on Cd2
Shows as: C-d2, sometimes Cd2
Samsung calls it: door or key error
Series: It belongs to the code set for today’s Samsung microwave line.
A short reset routine
Shut the microwave down completely by pulling its plug or flipping the breaker. Let the microwave dry if it met a spill or steam from the cooktop. Without any moisture, wait out 60 seconds, then reconnect the supply. When the code returns, requesting service is what Samsung advises.
See also
C-d1 stands for a door or key error. C-d0 stands for a door or key error. C-F0: communication error.
Getting repair help in the Bay Area
Call (415) 969-6153 if C-d2 keeps returning on a Samsung microwave in San Francisco or elsewhere around the Bay Area, or read about Samsung microwave repair. Have the code, the model number and the reset you tried ready.
Model compatibility: Samsung reuses codes across series and model years, so C-d2 / Cd2 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
On a Samsung microwave, C-d2 reports a door or key error.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
E-02 (E02) is Samsung's code for a cooking time setting over error (microwave) on a microwave. Cut power, let it dry or wait 60 seconds, then request service if it returns.
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