P0138 Pontiac -

Question

how to change oxygen sensor on a 2009 Pontiac Vibe GT, PO138 code error bank1 sensor 2?

Answer 1

Hi there,

On the awd model, go under the car behind the catalytic converter, follow the wiring harness into a rubber gromet in the floor panel. Pull the wiring harness out of the floor, disconnect it and remove the O2 sensor.

On the FWD use the same method, however the wiring harness doesn't go into the floor.