There are 4 sensors on the V6. The codes you have are saying that the post-cat sensors are faulty not the pre-cat ones which you appear to have changed.
Bank1 is the back of the engine as you stand looking at it from the front of the car. Firstly, I would check that the wiring is ok from the sensor as I have seen a wire wear through in the past that was not held up properly.
If the post-cat sensors go, you should see no driveability problems with the car as they are only used for monitoring and do not affect the engine management or emissions.
Bank1 is the back of the engine as you stand looking at it from the front of the car. Firstly, I would check that the wiring is ok from the sensor as I have seen a wire wear through in the past that was not held up properly.
If the post-cat sensors go, you should see no driveability problems with the car as they are only used for monitoring and do not affect the engine management or emissions.
