P0191 Ford - e350 utitly van

Question

I have p0191 on the van with a lean code I have replaced pressure sensor and fuel driver module were should I go next

Answer 1

P0191 Fuel rail pressure (FPR) sensor circuit performance

You have a lean code condition. If this code P0191 is by itself it just that the FPR, what can also cause this is a lean code condition, The lean code has to be inspected first. these are usually vacuum leaks , you can probabaly hear it , lean code that can cause P0191 will also cause the idle to be rough.