I just read out my ecu and I believe it read a code like "high voltage" 138 is 02 sensor circuit high voltage bank 1 sensor 2
and we believe it was the one on the cat. I have a testpipe and I installed the antifouler last summer ago, haven't pulled any codes since. I didn't drill out the antifouler b/c it fit in. When I took it out I notice it was a really tight tight fit. What I ended up doing was taking out the antifoulers and just installing the o2 sensor back in. I haven't been able to drive it yet but when I do n the CEL light pops back on what do you guys think I should do?

 

Get the right anti fouler and exact code.

 

I know when we did it the o2 heater thingy was working....n the voltage of the second o2 sensor was somewhere in the area of 1.0-1.2 If that says much

 

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I should be getting out of the navy in a month......I SUCKED!! can't wait to get back home

 

I just don't understand how my car can pop a code for my o2 sensor 7 6 months after I installed my testpipe n antifouler......unless cold weather has effected it somehow...