My washer now has a constant F5 Error Code. What is an F5 Error?

All the F5 error codes on that model references a lid lock assembly error. The only thing you can do is try and reset the electronics by killing power to it at the breaker/fuse panel on your home for one full minute then restore power. If after that the problem persists the lid lock assembly needs to be replaced. The lid lock assembly you need for that model can be ordered from the link below.

https://prismparts.com/products/whirlpool-washer-lid-lock-latch-assembly-pp4149995?_pos=2&_sid=6b210e397&_ss=r