Another two cents
I just replaced both O2 sensors on our 2001 Jetta VR6. I was able to remove both using an open-ended wrench since I didn't have that special tool, but it's a bit hard to reach since both are located on the top of the converter-one at the input (near engine) and the other at the output (toward the rear end). I would recommend changing one at a time so that you don't accidentally swap them (front to back). A dealer told me to tighten gently (like a spark plug--no tighter). You might get an Check Engine light after working on the O2 system. That would need attention by a qualified person (maybe you!). Some parts distrributors such as Autozone, Advanced Auto etc can check for diagnostic codes that light-up the Check Engine lamp, and they can also clear those codes too.
Answer
Not sure of exact location in that model, but one will be located in front of the catalyst - usually at the base of the manifold or just in front of the catalyst. The other will be just behind the catalyst. Fairly easy to remove. You need a special wrench or socket specifically for O2 sensors, about $10 - $15.
First answer by ID1129764567. Last edit by ID3503809470. Question popularity: 64 [recommend question]





