Wuz up guys I have a 09 acura tl sh-awd tech and the check engine light came on with a p0102 the mechanic shop replaced the mass air flow sensor but the code cant be erased I have 88679. On the car what can I do. Because all I see in info is check emission system and check sh-awd system and check vsa system

 

i bought an acura tl 2006 this summer, seemed to be in very good, shape overall. got it tested by a mechanic and didnt seem to have any problem. latelty i had to change a caoutchouc ring related to the power steering mechanism, that costed me 3$ . before doing that i went to a garage and they wanted to replace the whole power steering system with an estimation of 800$. so i dont trust the garages that much. anyway, the reason im posting this thread is to ask if someone knows about a specific problem that im having. well its a little bit weird as a problem. its related to the traction, sometimes. the gears just dont switch and sometimes it does perfectly, at first i tought that was the transmission, but its clearly not.Because in overall. when the gears swiches there is no problem. when it stalls. i turn off the engine, and restart , the gears responses. Might that be related to the electronic regulator? or is the VSA causing this problem? Please if someone can help me out here with some advices before i take action and go spend thousands in a garage, i would be thankfull.

 

Also I have this codes p0102 p0113 p0171 p0174
All wheel drive 77
Vsa 83