Update with some good, and some bad news.

Bad news is..the problem remains....Good news is, the vehicle now will not start at all with the problem moving from intermittent to persistent..So that should make the issue easier to track down....

Focusing on the 4B90, 4560 and 4590 codes. Would they be likely to be thrown by a failed in tank, or inline pump causing pressure to drop before the hpfp or are there other codes for low pressure before the hpfp?