Crank not start, 7E8 check engine?

Hi,

The 7E8 isn't an actual diagnostic code. The code is a menu of systems that the OBDII scanner can access. Is this what you are getting with a scan tool?

If it is, go to read codes and it should provide codes starting with the letter P and have four digits after it.

Here is a quick video showing how it's done:

https://youtu.be/b2IJGfImVvw

Let me know if that helps. If you don't have a scan tool, let me know and we'll go from there.

Take care,

Joe