2004 Lexus RX330 TRAC OFF and VSC lights O2 Sensors P0171/P0174 System too lean Bank 1&2 FIXED

The Check engine light with the TRAC OFF and VSC lights would not go off with a new gas cap, nor unplugging the negative terminal from the battery. So after purchasing a few tools and a Mass airflow sensor with both the Up and Down stream O2 Sensors, the problem was resolved and the GA emissions passed with no issues. Here&the links for the tools and sensors