I'm having an issue on my 2008 Octavia vRS with the 2.0TFSI BWA not making any boost. I ran a code scan which showed:
P0100 - Mass or Volume Air Flow Circuit
P0243 - Turbo/Supercharger Wastegate Solonoid A
P0444 - Evaporative Emission System Purge Control Valve Open Ciruit
I installed a new downpipe a few weeks ago and have had my diverter valve unplugged for a few months with no issues.
I also saw a thread from around 5 years ago with the same issues, but it the thread died before an answer. Does anyone have any experience with this issue, or know where to start looking?
