Hello!
My check engine light came on and after scanning it I got the lovely P0420 code (Catalyst System Efficiency Below Threshold)
I don't believe my cat is shot because I haven't noticed any power loss or weird smells coming from the exhaust.
Could I be so lucky that I only have a bad o2 sensor?
I have reset the code twice but it seems to come on after driving 60 miles or so...
Thanks for all the suggestions in advance
