Wish I could have taken you Mazda 6 to you. I had this light coming up on my Mazda 6 2.2 sky active, took it to Mazda which was a nightmare. They said carbon build up in pipes. changed me over 3k to replace some pipes and other things and had the car for over a month. They said it was fixed. Ended up blowing the turbo apparently back pressure from the exhaust caused the failure.
Wow there is a lot of things that goes wrong with these Mazda’s we are seeing lots of them these days great car when they are running right
It's similar to the pipe leading to the pressure sensor upstream the turbine on dci / Renault dacia engins.
Congratulations on the craftsmanship.
Yes I have seen them pipes blocked too and the rubber pipes to split not easy to change on them Renaults