How do I know what the problem truly is?

2000 TOYOTA 4RUNNER
135 MILES
Avatar
LOVES2HUNTNFISH
  • MEMBER
  • 2 POSTS
I just bought my car and I am the second owner. I drove 250 miles and the check engine light came on. Took it to Autozone and codes read: Catalyst system efficiency below threshold, air leak in exhaust before rear H02S, AF system error or faulty catalytic converter.
Dealer says he tuned up vehicle, along with replacing, wheels tires etc. I have to take it back for repair but I want to make sure the repair takes care of the problem. How will I truly know what the problem is and how will I know they honestly replaced anything?
Dec 22, 2011 at 1:56 AM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
You have a DTC P0420 possibly a catalytic converter or an oxygen sensor problem-
Dec 22, 2011 at 2:16 AM
Avatar
LOVES2HUNTNFISH
  • MEMBER
  • 2 POSTS
Mesage should have read 2000 Celica, probably not important. If the cat needs replaced can you give me an idea of how long it wil take to replace it?
Dec 23, 2011 at 2:31 AM
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
You gonna have to shop around for the lowest bidder-cost/labor it varies with location
Dec 23, 2011 at 2:37 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.