2012 Buick Enclave Fuel Rail Pressure Sensor Location. We have the best products at the right price. It could be the sensor but the only way to know for sure is have the dealer do a evaporative emissions fuel tank pressure test they have the special tools to do this outside shops do not.
There are two fuel system pressure sensors in your application. Yes the pressure sensor in mounted in a rubber grommet on the top of the fuel tank. To me this seems very steep.
It indicates that the fuel rail pressure sensor is receiving a signal that is outside of its normal range.
OBD-II Trouble Code P0171 excessively rich fuel system OBD-II Trouble Code P0172 excessively lean fuel system What the P0191 code means. Specifically the code was P0191 - fuel rail pressure sensor failure. This is a rare condition but would need reprogramming if not replacement. Buick Enclave Bad Fuel Pump.