dailydriver

Are these DTCs usually caused by an exhaust leak somewhere BEFORE the catcons, IF they are NOT from bad front O2s??

These keep popping up and setting the MIL, but it usually takes longer than just the 2 driving cycles which the manual states would set the light.

ANY ideas??

z-maro

iTrader: (18)

Do you have LT headers? When I installed mine I got theses codes. My tuner eventually tuned them out because he determined my O2's were functioning properly.

dailydriver

NO longtubes (afraid of spot checks, which I HAVE seen in my area AND the areas I frequently visit, and NOT having "someone I can go to" for inspection, like everyone else seemingly has).

EVERYTHING is still functional and hooked up as far as emissions equipment is concerned.