read code po135, located b1 s1 o2 sensor (sensor on drivers side approx
6" down from manifold on pipe,
got wrench on it and it was difficult to break loose, I am afraid of either snapping the sensor in 2 or taking the pipe threads out with it.
can i soak it at the bolt end with pb blaster, it's a tight area for me and trying to get a propane torch on it would be tough to do,
please help and thanks

 

I normally drive around for a bit and let the exhaust heat do the job. Just gotta make sure ya don't burn yourself getting it out.

You spray oil on it the bit that stays behind is gonna smoke and stink like all get out.