Yes, this is what I get to know so far. DO you know any good mechanic here in khi? Though most of them look idiot to me because they don't know a **** about the error code and charge alot of money and claiming it's fixed.(duh!)
I am thinking to clean the MAF and IACV sensor myself using some electric wire cleaning spray tomorrow. I hope that will fix the problem. (have a look at Pcv, Iacv, Maf And Throttle Body Cleaning Guide(pics Incl'd) - Toyota Matrix Owners Forum )
One more thing which my mechanic told me today, he said that there is a need to open the head of the engine since 'Duboo' (may he is referring to Values) are jammed and this is the reason why my car is stalling and doing a backfire. Does this make any sense to you, at least not to me ?