Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeC-20, C-21, C-22
ApplianceRange
All three codes carry one meaning, sensor malfunction, and they are information codes. Because ranges are not all built alike, the codes shown vary from one range to the next; if yours is absent here, the owner’s manual for your particular model is the place to look.
Samsung’s steps in order
Switch the oven off, then restart it.
Code still present? Disconnect the power for 30 seconds or longer.
A sensor code that will not clear can go to Samsung oven and range repair by phone at (415) 969-6153, for San Francisco and the Bay Area. Read out which code shows, the model number and the restart you tried.
Model compatibility: Samsung reuses codes across series and model years, so C-20, C-21, C-22 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-20, C-21 and C-22 are Samsung range codes for a sensor malfunction.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Samsung appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
