This is now the second time that the fan(s) have gone rogue at roughly 6200 rpm on my 2015 13" rMBP. The fan is running as the computer sits on and is idle with the lid closed. I look at the Activity Monitor and it shows the resources at 94% idle. I am using El Capitan v. 10.11.4. I've had MBPs before that had thee fans going when streaming video in the past, but I've never had one that had fans running like crazy when nothing at all is going on. I am at a loss to figure out what's going on here. I have always left my computers on with the lid closed, but now I'm shutting down overnight. In this case, it was just sitting next to me and, boom, it sounded like lift off. Any suggestions are welcome. Thanks in advance.