good afternoon guys,

please bare with me, I've never joined a forum or posted for that matter! i have just recently brought a 2007 focus st 225 with 90 thousand on the clocks. and i have already been greeted by the following codes:-
P0101 - mass or volume air flow circuit range/ performance problem.
and
P2178 system to rich off idle (bank 1)

i must apologise if i have gone against the rules posting in this way but i really am a person that needs to be shown to learn so again im sorry.

i eagerly await any help or pointers in getting to the bottom of this, thanks.