Insignia loses power

[Michael_1987]

Hi my wife has a 2009 insignia and i know they have common problems with the boost pipe now my neighbour has a 2016 1.6 deisel face-lift model and the boost pipe is different she has a problem regarding loss of power occasionally and I've read the codes and it comes up with maf sensor faults however this isn't the issue anyone else had this problem? Eml is on and I can't find anything on the face-lift model only pre face-lift thanks