View Single Post
Old 04-05-2005, 09:25 PM   #1
dirkdiggler66
AF Newbie
 
Join Date: Nov 2003
Location: Firebaugh, California
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
ODB II Code 0420 - Catalyst System Efficiency Below Threshold (Bank 1)

I got this code for the past 6 months. I have a code reader so I just clear it. I searched the web and I think it comes from either the O2 sensor or catalytic converter, maybe both. I was wondering if anyone had the same problem and had it corrected?? Any reply will be appreciated. I have a 2001 SE 3.1 w/100,00 miles.

Thanks
Gil
dirkdiggler66 is offline   Reply With Quote