97 acura cl 2.2 120k miles the code indiacates catalyst system efficiency below threshold Bank (1) any idea on how to correct
Oct 29, 2007 at 10:21 AM
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LOSTINMARS
AUTOMOTIVE REPAIR CONTRIBUTOR
222 POSTS
replace the catalytic converter and based on the mileage the 2 o2 sensors as well.
p0420/p0430 are 2 of the most solid codes out there. the only way i'd say it might be something else is if the car was newer and the miles very low.