P0171 01/02 Toyota Tundra: does 01/02 further specify what the issue is?

Question

Does the 01/02 given after the code further specify what needs fixed?1070

Answer 1

HI there,

The 1/02 could actually indicate bank 1 sensor 2. This can be the cause of this code. This code is for a lean fuel mixture on bank 1. This can be cased by several things including the O2 sensors. Also, intake manifold vacuum leaks low fuel pressure or a bad mass air flow sensor.