This may not be news to you veterans of the site but I just got done checking out the Tech Authority and they have 2 TSB's for the 2262 code Turbo Boost Press Not Detected-Mechanical

11-001-08 deals with the 6.7L Turbocharger Cleaning Procedure and if after cleaning the code returns then 11-002-08 is performed.

11-002-08 actually details the replacement of not only the Turbocharger but also the EGR Valve, cooler, crossover tubes, mass air flow sensor, EGR throttle control and a bunch of other stuff.