spn 157 fmi 18

[tree98]

If there's a bunch of air in the fuel system that could trigger a 559 code, although it should go inactive not long after startup if everything is working right. You need to run a leakdown test on it with insite. Personally I would take the head off the high pressure fuel pump and inspect for damage. That code means the fuel system is not making the level of pressure that the ECM is asking for.