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Catalytic Problem C...
 
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Catalytic Problem Code

  

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Car: 2006 Honda Civic EX Coupe (1.8L I4), 264K miles, Automatic
Code: P420A Bank One

Would buying catalytic system cleaner fix this issue? The car still runs great, its a Honda.

 


2 Answers
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At that mileage I’m sure it needs a cat 


Previous owner had put in a new cat before I bought it. I put 10K miles on it already


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If the cat is that new then it could just be bad or possibly an 02 sensor issue 


okay cool im gonna look up what the values should be and compare them to mine, thanks


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