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Discussion Starter #1
Does driving around with a P0420 for the front CAT, while I'm waiting to put in a new one, put me in danger of ruining the rear CAT too?
 

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Do you drive an 00-01? I think that's the code they have a TSB about. If it's the right code Honda will replace the ECM as it gives a false reading that the CAT is bad.
 

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Discussion Starter #3
mine is an '02 ..... they upgraded the code once before already .....
 
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