My Saturn SL2 has been throwing a couple codes here and there for a while, and the most likely culprit is this O2 sensor. It’s an easy fix, about $25 in parts, and easily accessible on the front side of the engine.

Sensor along with some anti-seize for the installation. Next picture shows the location of where the sensor was removed from using a healthy dose of PB Blaster

Next is a comparison of the old and new sensor…

And finally the sensor reinstalled…

Pretty easy in the end. Solved that issue. I wouldn’t exactly say I’m a car guy, but when I can google something, find a good video, and the part is fairly cheap, I’ll give it a try.