My Check engine light came on. I took it in. The mechanic said that is the O2 sensor. However it went back off when he was lowering my Jeep back off the lift. I drove away it came back on(strange). So I took it to someone else, someone more I trust. They said the same thing. That it is a bad sensor. He stated that I can do one of two thing. Either he buy the parts himself or I buy the parts and have him install it. I would like to know if anybody has done this before and if so, is there a certain brand I just look at? I know this is a dumb question but I thought I would just ask.

 

It could very well be the sensor. It could also be a lot of other things.

What code did it set? Post it and I'll post the troubleshooting chart for that code.

 

O2 sensors are simple to change yourself.....

 

I'll get that code. And I was reading that O2's sensor are pretty easy to replace.