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Help w/ DTC P0430 (Cats)

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Old 12-10-2003, 05:25 PM
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Default Help w/ DTC P0430 (Cats)

Today cruising home I get a SES light, i look up on the Scanmaster to see what's going on and see (P0430) which is Catalyst System Efficiency Below Threshold (Bank 2). Anyone have an idea or starting point as to why I would have this light? Car is a 01 Z-28 w/ 42k miles, still have stock cats.. GMMG exhaust, minor bolt ons and spray. Could the N20 have finally taken it's toll on the cats and clogged them? Any help appreciated.. Thanks
Old 12-11-2003, 10:46 AM
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I got that code last week in the rain I deleted it and it hasnt come on in 7 days. Clear it out and see if it comes back on.
Old 12-11-2003, 01:17 PM
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Originally Posted by LS1mtZ
Today cruising home I get a SES light, i look up on the Scanmaster to see what's going on and see (P0430) which is Catalyst System Efficiency Below Threshold (Bank 2). Anyone have an idea or starting point as to why I would have this light? Car is a 01 Z-28 w/ 42k miles, still have stock cats.. GMMG exhaust, minor bolt ons and spray. Could the N20 have finally taken it's toll on the cats and clogged them? Any help appreciated.. Thanks

My friend threw that code on his '01 WS6 with 20-21k miles on the clock. His passenger side (bank 2) cat was shot. Replaced under warranty.




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