Catalyst issue?
Aug 9, 2011 | 04:15 PM
Thread Starter
Joined: Apr 2005
Posts: 50
Likes: 3
From: PA
Catalyst issue?
Hi,
My CEL came on the other day. Hooked up my scanner and received the following message,
" Catalyst Efficiency Below Threshold (Bank 1) P0420 "
I did a search here but no results for code 0420.
Do you believe I may have an O2 sensor issue or catalytic convertor issue?
Any help would be appreciated.
Thank you very much!
Aug 10, 2011 | 07:51 AM
Thread Starter
Joined: Apr 2005
Posts: 50
Likes: 3
From: PA
???
Has no one ever had this issue before?
Aug 10, 2011 | 08:03 AM
Joined: Sep 2010
Posts: 806
Likes: 4
From: PA
Aug 10, 2011 | 09:24 AM
Joined: Dec 2009
Posts: 3,135
Likes: 276
From: CA - San Diego
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