Pulled these codes off from my scan gauge. It all refers to the post cat o2, which I don't have, and I have the sensor plug tucked away without a sim or anything. Should I be worried?
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Codes p0137, p0138, p0140
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Re: Codes p0137, p0138, p0140
Not really but if your keeping it I would have them tuned out. Or get Hptuners.08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine
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