As I indicated in my previous note that I think this is a bug. I tried to delete different forms which has this value and none of them work except form 8962 for PTC. Once I deleted this form, the $2 entry is gone. I think maybe when you have form 8962 it assume you won't allow you to add any entry to Self-Employed Health Insurance Deduction. But if you added an entry before you produce the form 8962, it won't let you go back to change it. That's my guess, and you can ask your programmer to check the logic.
