Morning peaple,hope somebody can help me on here,I have a 2013 c220 w204,having major issues with fault code P010315 mass air flow sensor 1 has a short circuit to positive.there is a short circuit to positive or a open circuit.ive changed the maf sensor,still the same,and I've also changed the EGR,its getting very expensive now and still the same,can anybody please help me