Hi All;

I've read most of the material on the forum about P0134 code. It looks like the heater in the forward O2 sensor is bad or wire is disconnected. My question is:
Where is this 02 sensor and
How easy is it to change via DIY.

I have O2 removal socket. Do I need to treat the threads w/ PB blaster before attempting to remove?

Thanks all in advance
Gary - Atlanta