p0171 & p0110 for toyota corolla 2001

Question

where is located of intake air temperature and maf? I trying found out why engine light still is on after got tune up and put (o2) sensor with other sensor that shop put in car? any suggests, can tell me how to fix this problem now before I go to e-check to pass test.

Answer 1

make sure there are no intake leaks (loose or not connected hoses)

the intake air temperature sensor  is built inside the MAF sensor and it is located on the intake tubing (you can try to clean it with mass air flow sensor cleaner)

see picture below