Thread: CEL with PO420 code
View Single Post
  #2  
Old 10-06-2004, 09:00 PM
THT THT is offline
AF Enthusiast
  
Join Date: Dec 2003
Posts: 374
Thanks: 0
Thanked 0 Times in 0 Posts
Re: CEL with PO420 code
Yes, running 89 can cause issues with your O2 sensors. IIRC, 0420 is the downstream O2 sensor that needs replacing. It's within the cat and is easily replaced. Buy the part at www.oxygensensors.com and follow my directions: http://forums.maxima.org/showpost.ph...2&postcount=16

~THT
__________________

Some people call it an obsession; I call it my Maxima.
Reply With Quote