fault code P0105 and P1125 - on a opel Astra 1.7 dtci 80 hp year 2008 Z17DTL

Question

I have found out that P 0105 mens manifold pressure/ Barometric pressure circut
and P 1125 mens Boost pressure/ solinoid valve input check, but which part shut be chance, is it a sensor or something else that fail, and hope someone can tell me, so please write too my mail:
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