ok well of course this is about my o2 sensor. this is the 3rd time i repaced it in the last 2 weeks so im getting kinda mad.... or couse this is about it tripping the code. but the thing is one day it will be tripping code one the next it will be tripping code to and visavera. could it be that im not burning all my fuel and its getting it dirty . like should i check my plugs n see if there gauged right? i dunno give me some help