ISSUE IS: Car does not start. It gives me ESP Code "see owners manual". It does not attempt to try to turn over at all.

So I just reinstalled my top end including my intake, all top end fuel injection, and to be honest everything surrounding it down to all cooling pipes. After completing this work and reinstalling my front clip, etc...all work was executed correctly and with high detail. So car has not run in awhile (was running and starting before).

Ran OBII codes with minimum codes just a readout that I had a fuel pressure issue (but the car has not started yet so how can this code really be much value).

Would like some input on how to get this engine started and gain some increased understanding of ESP Codes that could prevent a start.

Thanks in advance