This is a bug in the software. I have the same issue happening to me even after updating to the latest update. I have a Schedule C and my business code has nothing to do with a farm and my forms don't show a Schedule F, only the C. I guess for now, we have no choice but to continue and just ignore the fact that it says "farm". BTW, my business code is 541600, which if you look it up - has nothing to do with a farm.
Where do you report program bugs to Turbotax?
