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Problem for Chevrolet Cars
Generic problem for all Chevrolet Silverado 1500 Cars

Code P0430 Catalyst Efficiency below thr...




By johnk_56 on May 11, 2009

" "
I have a 1998 Chevy Silerado 1500 and I just installed new plugs, wires, disrtiburator cap and rotor and the truck runs great! I just got the check engine soon light and the ODB II scanner calls out error P0430 - Catalyst Efficiency below threshold (Bank 2). What is wrong? Thanks much John Johnk_56@hotmail.com
Comments:

May 11, 2009

- Thanks, I'll have to figure out which one and replace it.

May 11, 2009

- Can you clean them or just replace it?
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Best Solution

posted on May 11, 2009
Helpful)

rockitman187
rockitman187

Rank: Guru 
Rating: 90%, 1861 votes
one of your O2 sensors is showing as bad.
Comments:

May 12, 2009

- You'll need to replace it,But bank 2 is the rear one.
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This Problem Also Relates To: 2002 Chevrolet TrailBlazer 2000 Chevrolet Blazer 2003 Chevrolet Impala 1997 Chevrolet Cavalier 1998 Chevrolet Malibu 2006 Chevrolet Cobalt 2004 Chevrolet Cavalier

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