Howdy! I think my 02 sensors may be going bad due to not so great gas mileage and it had a bad cat for 8k miles due to the previous owner. Is there a way to scan to see if my 02 sensors are going bad without having to replace? Also how expensive are they if i do replace them if i dont use the ext warranty?

 

any1?

 

stock o2's around around 70 each from autozone but most will recommend stockers rather then the bosch replacements. You could get autozone to check for codes but if your ses light isnt on you wont see anything...you could see if someone in your region has a scanning program willing to help you do some minor scanning for a few bucks or beer or something...though i would recommend the beer after your done driving.