yes i had this code pop up so many times. It an oxygen sensor, that kept on making my CEL pop on. I have a computer diagnostic tool though, so it's easier and free for me . I believe that it's sensor 1 in bank 1. I just gave mine some time, because this is a common error, and my CEL went away by itself after a week or two, and it hasn't come back on in over a month.

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