injector codes 2015 Pete 579

[Bengy88]

(08-22-2023 )watkinstt Wrote:  Thanks for all the information. We put the truck through leakage test exactly how video shows. It failed to pass. Replaced the pressure relief valve on the end of the rail and truck still wouldn't pass.
Capped off each individual injector at the rail and truck still wouldn't pass leakage test. Next step is high pressure fuel pump from what I read in the other post...correct? During all of the running of the engine and testing the codes have not returned. The truck is original equipment and is not de-mandated. Thank you in advance.

By each individual injector do you mean one at the time? Asking because it’s common for more than one injector to cause this at the same time.