P0299 (underboost) problems

[Nolan72]

Hi all, I’ve got a 2016 a6 Quattro 2.0 diesel and I’m having a problem with the code p0299. I was on the motorway driving home and came up to slow traffic and then all of a sudden the coil light came on, so struggled it home in limp mode and took a scanner to it and that was the code. Along with a code something along the lines of turbocharger value. Does anyone know where I should look to first? I’ve cleared the code now and drove it fine since but don’t want a reoccurring problem

Thank you

[Crasher]

What is the VIN?

[Amigo]

This may give you some ideas:
P0299 - Audi A6 2.0 Ultra limp mode

[Crasher]

Finding out if it is an Ultra is why I asked for the VIN, the SCR system is prone to problems and this blocks the DPF and cat.

[Amigo]

Don't I know it...