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Sounds like you're out of the 3/36 warranty. Do you have an extended warranty? What have you paid for so far? They are obligated to either refund the diagnosis fee if there was one or figure it out. It is possible they had defective 02 sensor brand new in box. I've had that happen quite a few times. Its difficult to say what the cause is if I don't have the other CEL if any. They need to check how many milliseconds the injectors are firing at. Sounds like the 02 sensor are fouling out. Also what was the 02 sensor code for (performance or circuit)?
Last edited by davidsn_670; 12-30-2017 at 04:04 PM.
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