thanks for the video, this was the B1S1 oxygen sensor, correct? , also are there another 2 or 3 oxygen sensors further down in the engine and along the exhaust for the 2009 TDI Golf? and if so, can they be replaced if you put the car up on ramps? thanks, Steve
If its another sensor it will read different on fault code, this is bank 1 sensor 1 and another one would be maybe bank 1 sensor 2 - i dont know but thats how it works