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o2 sensor codes with headers

This is a discussion on o2 sensor codes with headers within the External Engine forums, part of the LSx Technical Help Section category; I'll be throwing on my lt's next week and I'm fully expecting the rear o2 codes along with the air ...

  1. #1
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    o2 sensor codes with headers

    I'll be throwing on my lt's next week and I'm fully expecting the rear o2 codes along with the air system etc. However the codes p0133 and p0153 which are slow response codes I understand are often associated with the front sensors not getting hot quickly. Question is are these codes just annoying or do they actually affect performance? Corvette sensors I hear fix it sometimes but I dont have $160 atm to give them a try especially since I have new bosch's in mine. Are these the only codes the fronts are supposed to throw if theyre working correctly and its just the low temps of the headers or are there other codes the headers could make appear even if the sensors are working?
    Thanks Dan

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    cutting and welding mark21742's Avatar
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    I'd throw the headers on and then see if you get any codes from the front o2 sensors, it does happen, but its rare. I've been running my stock original front o2s with over 75,000 miles on them and no problems

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    Senior Member redbird555's Avatar
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    Ya im gonna throw them on and go from there but will the slow response codes should they occur affect the performance by making it switch between open and closed loop? Or can it just be ignored if the senssors are proven to be good.

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