vag com style question

[smarty]

i did a check using a diagnostic tool and i got two fault codes.these were

4067 - air mass meter signal to high

4626 - charge pressure control difference

would this be my MAF sensor or something else?

 

[goble]

air flow meter and n75 valve/boost pressure control valve
n75 is more than likely caused my air mass fault

 

[smarty]

are the n75 valves expensive to buy?

 

[Sharky_82]

£50 iirc - but the maf sensor is more likely to go then the n75 -