No i know just cause he reset it it is not fixed but i want to make sure it reset to see if it was going to come back. I took connector one off of the sensor i got from autozone and put the one on it that came from factory. Did you mean it will not harm car? Yeah iam trying to get fixed asap i cannot stand riding with light on.Did you say there is some way to find out which kind it needs and air/fuel or o2. Or should i assume that since o2 did not work the other one will? Also do you know how much sensor is at lexus or if not what exactly is it called so i can get price for it.