W12 Lambda sensor Replacement Guide

[steamship]

Originally Posted by Horrgakx

(Oh, and I've corrected the location of the sensor, which is bank 1 sensor 1.)

Your other thread specifically mentions it as being Bank 3, Sensor 1, which you got from the VCDS scan:

24416 - Linear Oxygen (Lambda) Sensor B3 S1; Pump Current Wire

I think you are starting to confuse yourself about which is which, and another reason I suggested that before replacing the 'faulty' sensor, you simply unplug it, drive it, and scan it again, which should show a different error code for the same sensor. If you disconnect the wrong one, you'll then have two error codes.

Looking at the picture of the exhausts I posted in the other thread, B3S1 should be the first sensor on the right side of the engine as you look at it.