I wish you well mt friend and I still feel your pain.
You and I seem to be in the same boat, except I get ZERO, ZIP, NADA codes. I even replaced my fuel pump control module and the key ring antenna. I knew it was a long shot, but still had to rule those out. I am currently "gutting" my car to gain access to the wiring harness in the dash and the body. Don't know where else to go at this point.