Quote:
Originally Posted by JFP in PA
P0430 has nothing to do with the gas cap, it is the code for low conversion rates on the three way cat on bank 4-6. Usually, this is a failing cat.
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Right you are JFP. That was a hip shot from memory and I didn't look it up. My bad.
P0445 was resolved with a fresh gas cap but a periodic P0430 is indeed a poor functioning cat. I managed to clear it out some with a bottle of techron and a spirited drive so it would still pass smog but the code reappeared 6 months later. The long term fix is to replace the failed cat.