00' Trans Am Code problems
I am getting codes P0151, P0154, P0174, P0420, and P1153. The car is a 2000 trans am A4. The people I bought the car from said it needed a new Cat installed on the passenger side. I just wanted to see what everyone else thought before I threw money into a cat without properly evaluating the problem. I know the O2 sensors on the passenger side are new as well.
Thanks!


