P0133 Infiniti -sensor 1 bank1 location

Question

failed smog test p0133-02 sensor circuit slow response bank 1 sensor 1 there are 4 o2 sensors need location sensor 1 bank 1

Answer 1

P0133 - 02 sensor circuit slow response (Bank 1 Sensor 1)

Bank 1 is where cylinder 1 is located, the other side becomes Bank 2, Being sensor 1 this is the upstream 02 sensor or the engine management sensor. Facing front of the engine it would be at the left hand

Use this diagram which shows the 02 sensor from the back of the engine.