Are bad O2 sensors covered by CPO warranty
I just got a CEL and got a P0130 code, for a bad O2 sensor. I have had a really bad suspicion that i have been running rich based off of my abysmal fuel mileage and lots of carbon build up on the tail pipes. I have a CPO CLS55, and are the oxygen sensors covered by the CPO warranty, or are they viewed as a “wear” item like brakes?
Thanks for your help,
Tom



