Hi, I'm new to the forum so sorry if i'm not doing this right. I have a 2002 GS300 and I'm getting a P0161 error code that's telling me that my o2 senor bank 2, sensor 2 is having problems. I'm getting a little confused here and was hoping someone could help me get this straitened out. Does my car have 4 o2 senors (bank 1 sensor 1&2, bank 2 sensors 1&2) and how do I find out which one is b2s2? In a post on this forum www.oxygensensors.com was recommended. It looks like they would have what I need but which one is for replacing b2s2, Pre-cat Cyl 1-3, Pre-cat Cyl 4-6, Post-cat Cyl 1-3 or Post-cat Cyl 4-6? Any help would be appreciated.
