64bb Posted April 2, 2012 Posted April 2, 2012 my 1999 rx 300 has 120k miles. it runs well, with no stutter, or any smell of fuel out of the tailpipe. yesterday, the cel came on, and it is the p1133 code. even with the cel light on, the car runs fine. any thoughts?? i suppose it could be the rear oxygn sensor. anything else come to mind?? is thiss an emergency repair??
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