I bought a 2002 Toyota Camry with 100,000 miles on it. 1 week after I bought it, Check Engine Light came on. The car had passed emission test only 2 days before.
I got the car inspected for Check Engine Light problem and mechanic told me that we need to change Catalytic converter.
I drove the car for about 2 months and then took the car for oil change. Mechanic suggested Transmission Fluid flush and fuel air induction service.
I did it and Check Engine Light disappeared. I drove the car for another week and then it came on again.
Do I really need to change Catalytic converter or problem is something else?