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john, The Car Guy
Category: Toyota
Satisfied Customers: 16008
Experience:  ase tech over 15 years in the field
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98 toyota camry: a 2.2 4 cyl..p0420..catalyst..catalytic converter

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i have a 98 toyota camry with a 2.2 4 cyl, that has a p0420 code- catalyst efficiency below threshhold. i replaced the catalytic converter, and cleared the code. the same code is triggered again. both 02 sensors have been replaced also. any ideas?
Hi . Thank you for asking your question on JustAnswer. did you replace both converters? or just the rear?

Thank you again for trusting us with your problem. John aka eauto
Customer: replied 5 years ago.
Only replaced the cat below front seats, didn'know there was more than one. Could you send a picture of exhaust with the parts labeled? Thankyou P.S. broke a stud between head pipe and cat, seems to be quiet there though, flange behind cat appears to be leaking, small noise
there is one built on the exhaust manifold..Its a mnifold converter That is the one for the 420 codegraphic
john and 4 other Toyota Specialists are ready to help you
Customer: replied 5 years ago.
Thankyou will try that