SPN 157 FMI 17 lights up when performing fuel on CAT C7

Hi guys, I have a truck with a CAT C7 where I was put on the scene and the high pressure fuel pump was torn out. I put a new high pressure fuel pump in and now I get SPN 157 FMI 17 after the truck has warmed up. It fails the CAT ET tests in the fuel category. The fuel pressure sensor seems to be checking out ok when I monitor it on the software.
Any ideas are appreciated. Thanks I know it’s late.