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Code P0420

  

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I have an Oldsmobile Bravada 1999 with 160k miles. Check engine light turned on. Scanned it and it said P0420(catalytic converter below threshold in bank 1) my grandpa who’s been a mechanic for 50 years says this isn’t a big problem and I should wait till spring to have him fix it because winter here is bad in Michigan. How long can I drive it with this code?


2 Answers
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There is nothing wrong with driving it with this condition. Only if you need to get inspection, then you should fix the issue. 


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I drove my 2000 Nissan Maxima for several years with that code. Car seemed to run just fine.


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