location of fuel rail pressure sensor 2013 chey 6.6 diesel

Question

Truck starts and runs not a lot of power and dash says cleaning fuel system keep driving, but has been doing that for weeks, and now you may get down the road 5to 10 miles and it goes into reduce power mode. Have changed fuel filter, full of def

Answer 1

The location of the fuel rail pressure sensor is on the left side of the engine compartment

​ here the number 3 in this diagram.

When you set this code on the Dodge , P0191 is not going to cause what you are experiencing, inspect the pressure regulator if there is debris , the injection pump is suspected as faulty.