Problem in Apple Diagnostic maybe El Capitan

Hi guys, I downloaded El Capitan on my MacBook Air 11 inch (Mid 2013, but bought in July of this year) and I did a diagnostic when appear a problem for battery but this problem is a glitch because when I did a diagnostic with yosemite I haven't this problem and when I check the battery status it's ok. So I think this is a bug of El Capitan. I resolved this with PRAM reset. You never had this problem?