Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** code sets when ECM detected that the actual FRP was less than 0 MPa (0 psi) and is usually caused by a failed regulator. Here are testing instructions, let me know if there is anything else I can do to help. Thanks-https://www.dropbox.com/s/37ezajgoegre96o/p0191.PNG?dl=0-
There are two regulators, which one did you replace?
I'd replace regulator 2 at this point which is more common and about the last thing possible on the list at this point. Let me know how it goes or if you have more questions. Thanks.
It can be removed without taking the rail out.
No problem, let me know how it turns out or if you run into questions. Thanks again and have a good evening.