Thought I would share my experience with the P2227 error code and replacing the Barometric Pressure sensor on my 2018 RAM 2500 with the 6.7L Cummins.
tl;dr: with new(er) vehicles, though seemingly contrary to logical thought, you end up saving money by spending a little more up front for OEM...
I have a 2018 2500 Cummins with only 17k miles on it. The other day, while waiting in line for fuel, a hissing sound started out of the blue coming from the engine bay somewhere. The truck has not thrown a code. It seems to only happen when the truck is at operating temperature, I do not hear...
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