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 3:21 AM
Code p0420
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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.
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.
Oct 29, 2007 at 6:14 AM
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