Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeC-11 / C11
ApplianceMicrowave
C-11, written C11 on some displays, is Samsung’s code for an error with the gas/easy/PH sensor. It is part of the code list for current microwaves, and the same line of that list also holds C-10 and C-12.
What to do, by situation
Situation
Action
Always
Take power away at the wall plug or the breaker.
A spill or cooktop steam recently touched the unit
Wait until the microwave has dried out.
Nothing wet
Hold off for 60 seconds, then reconnect power.
C-11 appears again
Request service.
Compare with these codes
C-10 is read by Samsung as a gas/easy/PH sensor error.
If C-11 survives the reset, ring (415) 969-6153 and ask about Samsung microwave repair in San Francisco. Say what the display shows, share the model number, and mention whether unplugging and waiting made any difference.
Model compatibility: Samsung reuses codes across series and model years, so C-11 / C11 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
C-11 reports a gas/easy/PH sensor error on a current-generation Samsung microwave.
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.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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