Quote:
Originally Posted by avanmeerbeke
Hello,
Quick question probably already answered before....
I've been getting fault codes P0420/P0430 (cat. conv. eff. bank 1 and 2).
Any ideas?
Thanks for your help.
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If you really want to find out what is going on, scan the car with a Porsche specific scan tool and look at the voltages on the O2 sensors before after the three way cat., paying close attention to what the voltages do. If they are following each other, your cats are on their way out. Both of these codes indicate weak or failing cats.