2004 Lexus RX330  TRAC OFF and VSC lights O2 Sensors P0171/P0174 System too lean Bank 1&2 FIXED
Channel: chris schmitt
Date: 2022-04-24

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's the links for the tools and sensors