Help with 06 2.0 TDI Touran

Hi All, 

Childminders 06 2.0 TDI throws an emissions workshop light semi regularly and goes into limp mode. 

She's been told lots of different information by 2 garages and so I said I'd scan it.. 

I got this from here car:

Address 01: Engine        Labels: 03G-906-016-BKD.clb
   Part No SW: 03G 906 016 HK    HW: 028 101 225 1
   Component: R4 2,0L EDC G000AG  7000  
   Revision: 12345678    Serial number: VWZ7Z0E2904933
   Coding: 0000078
   Shop #: WSC 01324 785 00200
   VCID: 73E5B8A7123E95DE87-8026

4 Faults Found:
16622 - Manifold Pressure / Boost Sensor (G31) 
            P0238 - 000 - Signal too High - Intermittent
             Freeze Frame:
                    RPM: 1281 /min
                    Torque: 0.0 Nm
                    Speed: 23.0 km/h
                    Load: 0.0 %
                    Voltage: 14.36 V
                    Bin. Bits: 00001011
                    Absolute Pres.: 1020.0 mbar
                    Absolute Pres.: 2580.6 mbar

18000 - Altitude Sensor / Boost Pressure Sensor 
            P1592 - 000 - Implausible Correlation - Intermittent
             Freeze Frame:
                    RPM: 0 /min
                    Torque: 16.0 Nm
                    Speed: 0.0 km/h
                    Load: 0.0 %
                    Voltage: 12.46 V
                    Bin. Bits: 00001100
                    Absolute Pres.: 999.6 mbar
                    Absolute Pres.: 2091.0 mbar

16618 - Boost Pressure Regulation 
            P0234 - 000 - Limit Exceeded (Overboost Condition)
             Freeze Frame:
                    RPM: 2520 /min
                    Torque: 292.0 Nm
                    Speed: 78.0 km/h
                    Load: 72.5 %
                    Voltage: 14.14 V
                    Bin. Bits: 00001000
                    Absolute Pres.: 2193.0 mbar
                    Absolute Pres.: 2590.8 mbar

Any help would be greatly appreciated