Is this the pressure relief valve ?P0088 Fuel rail/system pressure too high + P228F Fuel pressure regulator 1, learning limit exceeded +P00AF boost

[Sonicaccord]

Hello just bought a car with these codes. I also have live data if that helps
I am going to collect it and fix it at a nearby car park

it had a new fuel pump and alternator
seems strange they would overlook the Pressure relief valve ?
I got OBD readings of 12,200 PSI as I revved the car
and its In limp mode not turn boost building and dies on the hills ?
Battery voltage is at 13.4volts when the cars running
I am going to get a pressure relief valve and swap out the old old . does it sound like that could be the issue ?

is it on the back of the engine on the drivers side (RHD) on the end of the fuel rail ?
is it a 32 mm socket to remove ?
if I just clean it with brake cleaner should that fix the issue ?
what is the Bosch part number and is it an easy job to do on the road ?

 

[F6HAD]

Never seen p228f before, but who knows if someone has been messing with it previously. You have 2 separate issues, one is on your fuelling side (do your proper checks for injectors and rail pressure etc) and your second issue is the turbocharger itself, it’s sticking due to soot accumulation on the vanes. Either strip and clean or replace that. Also check if the dpf is present as that’s the cause of the blocked turbo.