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The VCT could cause it.. is there a reason you suspect that? I would start by getting codes so at least you are taking an educated guess.
Dont unhook the battery. That will clear the codes and we wont be able to find anything. Most parts stores will check codes for free.. just run by one and ask them to check your codes.. ignore what they try to sell you and let me know the code numbers that are in it.
Generally the wrench light means something to do with the throttle by wire... obviously its intermittent.
Thats fine. Ask for a printout and let me know all of the code numbers.
The throttle body is part of the powertrain.. it feeds gas into the engine. Lets just get the codes and go from there. We can discuss theory all day and still be no closer than we are right now.
No problem. I will be standing by. Just reply when you got the codes.
They wouldnt give you the codes?
OK. With that code it is likely the oxygen sensor. Are you intending to replace this yourself?
There is a TSB about reprogramming it. I would assume by now this has been done... that TSB was released 4 years ago.. if its been in for service at the dealer since then its most likely already been performed. Usually it needs a new sensor when this code comes up at this point.
No problem. Good luck with it and let me know if you need anything further. You can reply to this same question for follow ups at no extra charge. Also please be sure to rate my service so I get credit for it. Thank you.