Quote Originally Posted by frosty View Post
Sounds like you need a map sensor, Costs about 40$ from amazon and is a 5 min job to replace. The other code could be one of a few things, Could be a bad rear o2, could be a bad front o2, could be a bad cat, could be a aftermarket cat not doing enough as far as your engine computer is concerned. Personally? I would replace the front o2 if it is more then 60k miles or 5 years old and then do the non fouler trick on the rear o2. You don't need a o2 sensor to tell you when your cat is going bad. Trust me you will know because your car will not go over X mph. Also ignore all of that cleaning bull****.
Thanks