Quote:
Originally Posted by staircasesurfer
Black_Boxster did you ever resolve this issue? What were your findings?
I am in similar situation, Occasionally popping CEL for a P0430. Hoping it is not the cat. Planning to check o2 voltage with code reader to compare pre and post cat 02 voltage on both banks.
I may just need to give it a good spirited drive or two, too much commuting.
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Exhaust leaks at or before the post cat O2 sensor can also cause the P0430 code.
Pin holes at the O2 sensor bung weld can cause the code, and can be very hard to detect.
Cats are actually designed to last the lifetime of the car. So if you have had no other problems with the car that could affect Cat health, you always use good fuel, your fuel trims are not constantly rich or lean. Your AOS is not or has never been faulty. Then I would look for other causes for the code.
Anything that could cause excess oxygen into the exhaust or a fault with the O2 sensor its self.
What year is the car and how many miles??
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