I possess a comparable issue. The left turn signal and backup light are reported as nonfunctional; nevertheless, upon inspection, all bulbs illuminate. I have attempted to clear the code, but it reappears. It also indicates that my adaptive lights are defective, however their movement up and down is observable. I have adapted to the complaints; however, I am unable to reset functions such as oil changes since the warning persists and prevents me from clearing it to perform the reset.
I suspect it is a computer issue. For a 2011 Mini, the expense of attempting resolution is not justified. I would sell the car if my wife did not cherish it so deeply!