I have a 2010 mercury milan hybrid. I'm having troubles with my evap system.

What is your question?

I have a p2418 code and a p0451. Witch I'm thinking it's my fuel tank pressure sensor. My question is I don't know where it's located and where to buy it ive looked everywhere. I've found my MAP sensor. Does every car use both a MAP sensor and a fuel tank sensor or is it one or the other. And whays the differance between the two.