po420 code

[brian a]

Need some advice with a po420 code.When i erase the code sometime it dont come back after about 2-3 weeks,and only if i an caught in a traffic jam.What to look for first.,

[Scottydoggs]

sounds like its time for a new kitty cat.

what year and miles you got there?

[jjmitch87]

Agreed- new cat for you. I dont have one at all and am getting this code, and non foulers arent working because even after drilling out the ends as much as possible the sensor wont grab threads, and DIY MIL eliminators arent working out because junkyards refuse to sell me pigtails and I refuse to cut into perfectly good wiring. At this point my rejection sticker for emissions is already 3 weeks past due, Im looking for a cheap cat to have welded in (100$ total including weld) with no luck yet.