CostolioSamsung microwaves error codes
6 microwave error codes for Samsung microwaves, what each one means and what to try, paraphrased from Samsung's own source. Codes vary by model, so confirm in your own manual.
All codes
- C-10 / C-11 / C-12 Gas, Easy or PH sensor error.
- C-20 / C-21 / C-22 Temperature sensor error.
- C-70 / C-71 / C-72 Steam sensor error.
- C-d0 / C-d1 / C-d2 Door or key error.
- C-F0 / C-F1 / C-F2 Communication error.
- -SE- A key on the panel is shorted or stuck.
C-10 / C-11 / C-12
What it means: Gas, Easy or PH sensor error. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
C-20 / C-21 / C-22
What it means: Temperature sensor error. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
C-70 / C-71 / C-72
What it means: Steam sensor error. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
C-d0 / C-d1 / C-d2
What it means: Door or key error. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
C-F0 / C-F1 / C-F2
What it means: Communication error. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
-SE-
What it means: A key on the panel is shorted or stuck. This one often needs a licensed technician.
What to try
- Unplug the microwave or turn it off at the circuit breaker; if its electronics recently came in contact with moisture, give it time to dry.
- Otherwise, wait 60 seconds and then turn the microwave back on.
- If the error code returns, request service.
Source
- Microwave error codes (Samsung US Support) (checked 2026-11-02)
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