[4cdndctn]

Ressurecting this thread!
I have a new-to-me '06 v10 that 2 days after she was mine, starting throwing O2 sensor codes. The dealership must have 30 hours into the car already and now 2, count'em 2, specialty technicians are analyzing my car this Thursday.

I can't imagine this is normal nor from some other threads did I expect any type of royal treatment, but this dealer which has not received one penny from me is going well above and beyond the traditional call of duty.

So they get an A for effort and we'll see what the results are but kudos to Crestmont VW in NJ for showing their customers that they actuall care.

 

[4cdndctn]

I have about 6 months left on my new car warranty and 62k miles left on my extended platinum warranty, they're not getting rid of me that easily. The Treg was not bought to be a daily driver so if they need to due weekly maintenance until it's resolved, that's fine by me. We'll see what the 2 specialty techs say.

Unless they can prove that light was 'born' glowing they won't be rid of me until they figure out what's turning it on.

 

[4cdndctn]

After nearly a week at the dealer and near fulldismantling of the engine bay, what was the O2 sensor fault code on a generic scanner was really a "Fault Fuel Trim Bank 2" on the 5052 diagnostics. Treatment was to remove all oil from the intake tract (maybe 1 cup b/w both sides) and changing the fuel filter after only 3k. They suspect the issue may have been caused by either "bad fuel or biodiesel". After 100 miles, no warning lights have presented.
As you said purtle, they told me that light seems to favor being intermittently lit and as long as it's not blinking, I shouldn't worry.
I was told to bring it back in after 300 clicks on the ODO for a check, and provide a fuel receipt if one's to be had.

 

[4cdndctn]

Code came back. Dropped the engine, swapped out both ECMs, no more code. They did however mention I may have some new turbos in the near future as one has medium oil leakage. Once excessive, they will swap both.