Well i was drivin home, and i was about a half mile from home, and the dreaded S.E.S. light came on. The car hasnt been acting funny at all lately. So im thinking when an o2 sensor goes out does it throw this? The car has almost 90k, on it, and i dont kno if the o2 sensors have been replaced or not, so ill prolly go to autozone when i drive the car again, and get the codes scanned or something.