Aidan Birley
Hi
Not familiar with this model but MB normally have boost sensor mounted on the manifold.
Have you disconnected the sensor on air box to see what codes it gives
Aidan
Message Thread 
Mercedes Benz A200 2.2 CDI 2014 - ESM switch non operative, lack of power - Fixed # - Gary Sheriff July 11, 2018, 7:48 am
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on July 11, 2018, 8:14 am, in reply to "