if I go to the dealership, and let them know I keep pulling the code, what are the chances they will fix this under warranty? it IS under the 7/70 emissions warranty, correct? am I going to get charged for a diagnostic test?

 

replace the cat.... this will fix it..

 

They HAVE to fix this under warranty. I am going to the dealer tomorrow with the TSB in hand and warranty information printed out just in case. You will initially be charged for the diagnostic, but once it reads P0420, they have to refund that.

 

www.nissan-techinfo.com

its a tsb, should be covered under emissions warranty