my check engine light came on recently so i used my Pocketscan OBD II Code Reader and got a error code p0102. In my manual it means "MAF or VAF A circuit low input" im lost here and really do not know what that means could somebody explain that to me please thanks

 

if it is a P0102 like you said, either your MAF (mass air flow) sensor might be loose or the wire has some sort of resistance or open. just make sure its on tight, check the connections and the wires