Check Engine Comes on -- Camry

So, once again. It only does it when the car is cold. If the engine is warm and I make the stop, no issue.

It did it yesterday morning. The light was out by this morning.

Don't imagine the injectors need cleaning. The car only gets Chevron with Techron gasoline, because any other gas (well, almost any other gas) causes the Check Engine Light to come on with an O2 sensor code.

Which, also disappears in about a day or so. Funny, I can buy non-ethanol fuel from any source and dump it in the Camry and no engine light. But, if I buy Shell, Texaco, etal, the light will illuminate.
kris

 

Funny thing about this Camry. We got it brand-new. Had to wait a bit for it because we wanted a Japan-built car and we also wanted a manual transmission-- even back in 2003, they were not exactly rushing standard transmission out to America. Dealer wasn't cooperative until they found out that was the ONLY acceptable deal. And, we did get a very decent deal.

But, the Check Engine light came on upon a week or so after buying when we filled it with some gasoline or other. The dealership said O2 sensor and of course it was replaced under warranty.

Normally, we only buy Chevron because it is the only local station, but a month or two down the road (car was only a few months old), CEL again. Again, another O2 sensor under warranty. Fast Forward, rinse repeat, but this time they decided that while the code was O2, the real problem was the very pricey vehicle computer, which they then replace under warranty.

By this time we had sort of connected the light coming on with us buying gasoline at a station other than Chevron, but Toyota dismissed the idea.

And, again, after a month or three, we bought Texaco and CEL comes on. This time, I asked the independent mechanic who usually works on our cars what he thought. He is older and has been around forever and does not RELY on the computer's diagnosis to the excusion of his experience, although he does not dismiss the technological aid.

Anyway, I forget his answer but it was something about the gasoline formulation and that problems could be resolved with a simple adjustment of something, which he would be happy to do for nothing, but he also said it was not an issue that really needed to be addressed and don't worry about.

Never had any driveability issues, never any MPG drop, etc. in 15 years, so we took his advice and pretty much only fill up at Chevron, although Kroeger gasoline in a nearby large city seems O.K. too. And, as I said, we ocassionally fill with non-ethanol when buying gas for the chainsaws and the non-ethanol is not only accepted without complaint, but it seems to give the car a bit more power on hills (may be our imagination).