Originally Posted by jautry27
Now me, I had bad luck. Bought a 2007 WRX from a dealership. Took it for a test drive and went to my mechanic. Had a check engine light on but only came back as an o2 sensor. No big deal. Other than that, there were no knocks, clanks, pings or anything of the sort. Nothing to warrant there being anything wrong with the car. All the belts were good, hoses, etc....
Came back as an O2 sensor? You know that doesn't just mean that the sensor is bad right?