Samsung · Oven & Range
C-20 / C-d0
Door lock error (self-clean)
What causes it
Door lock motor or switch fault.
What it means in practice
The door lock motor or switch isn't working. That usually shows up during self-clean, when the door should lock.
What to check before calling
- ✓Don't run self-clean again until it's inspected.
- ✓Power-cycle at the breaker — if the door won't unlock, call us rather than forcing it.
- ✓Let the oven cool completely and try again.
- ✓Check that the door latch isn't blocked.
When to call a technician
If C-20 or C-d0 returns, the lock motor or switch likely needs replacing.
If those checks don't clear the C-20 / C-d0 code, it's usually a sign of a failed part rather than something to keep resetting. A technician runs a full diagnostic on your oven & range, confirms the cause, and quotes the repair before any work starts. The $89 service call is waived if you go ahead with the repair, and parts and labor are covered by our 90-day warranty on parts & labor.
Common question
Is my door stuck shut?
If it won't open, wait for the oven to cool. If it is still locked, call for service rather than forcing it.
Still showing C-20 / C-d0?
Same-day diagnosis and repair across Las Vegas, Henderson, and Summerlin. $89 service call, waived with repair.
Other Oven & Range Error Codes
Not seeing C-20 / C-d0, or want to compare it against a different code on the display? Here's what these other common oven & range codes mean.
- Samsung E76 / E77Fan or motor error
- GE F1 / F2 / F3Control board or sensor fault
- GE F7Stuck function key
- Whirlpool & Maytag F1 / F5Control board fault
- Whirlpool & Maytag F3 / F4Oven temperature sensor (RTD) fault
- Wolf, Viking & Thermador Flashing "F" + numberFault code — meaning is model-specific on professional ranges