2012 GMC Terrain P0191 FUEL PRESSURE SENSOR CIRCUIT

[@dirtyski1114]

P0191 is typically a high pressure side code though right?

[@DRBauto]

You know u are correct. I actually posted the video before actually did the repair. But the sensor before high presure was actually bad and needed replacement also. So when u get codes like this, most of the time it is the HP pump, but dont get to excited :) 2x check it all. I am saying this because it kicked me back :), better yet, check actual pressure then recommend both pressure sensor and the HP pump. While injectors are exposed do a cylinder balance test. this can really guarantee the work and diagnostics.