Quote:
Originally Posted by creekster
If your gas cap is not on properly (or at all) your tank won't pressurize properly and this will mess up the sensors in your system, causing the code to trigger. It will usually take a few cycles of starting and stopping the engine (this means starting, running until fully warm so all the sensors go through all their positions, and then allowing to cool down) with the cap on properly to re-set the light. This has happened to me (my wife) a couple of times.
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I don't think this was the problem. I'm not a gas cap amateur.