Got a CEL yesterday. Garage scanned it and it was "exceeded maximum boost" and "Temp coolant malfunction".

Now this thermostat is only a few months old (if you remember it was the replacement that led to the tensioner bolt to shear off and toast my engine). Garage said the engine is warming up slowly and not reaching ideal temperature.

They really didn't have much to say about the boost code. Comments?

01 allroad 2.7t