Re: Newbie with error code question...!!! Please Help...!!!
Sounds like a typical dealer response. Why not check the most logical stuff first, instead of just replacing parts until they stumble onto the resolution? All this at your expense too, unless you have a good warranty.
Sounds like the problem started after you put some different fuel in it, right? Do you know what it was? Could it have been E85 or a leaded fuel? Does it smell like regular gasoline? Is the same gas still in the vehicle? If so, the whole system is probably contaminated, including the new sensors. Doesn't take too much, especially if the system is already contaminated. There should be NO carbon deposits anywhere if you've been running a good quality fuel. If the bad fuel is still in it (especially if it's a large amount), I would probably get it all out of there somehow, either by running it, removing the tank or pumping it out, then put some known good fuel in and run it for 50 miles or so. Then replace (or take back as defective) all 4 sensors. Just for giggles you may want to pull a couple spark plugs to see what they look like too. If you're getting lots of carbon, they may need to be replaced too. I don't want to say it, but it would also be possible that the cats. could be bad too. That runs into some $$$. The good news is that if they're bad, you should also get cat. related DTC's.
Bottom line, first try to find out what that fuel is/was, get any remaining out of there, run it awhile with some known good fuel to purge the system, start checking components, and go from there. Good luck and please keep us posted on your findings.
05 LX/RT and 06 WK/GCO, (modded similarly) with MDS "ON" Light, Vortex Gens, Debadged, DashHawk, BT Catch Can, SRT CAI W/Add Air Inlet, K&N Filter, Sonnax Trans Line Press Booster, SC Tuner W/Adv Trans Tuning App, DS Tuner, Cust tubular headers w/3 in. catback, Bilsteins, SRT frt/rear bumpers, Eibach SRT Lwr Sprgs & Sways, FRI Sidewinder Cam Adv 2*, 6.1 valvetrain, SLP 25% UD Pulley, BBK 85mm TB, SOS Coils/.060 spark plug gap.