Q: 3 codes.P0420,P0011,P0021,what should I do? Replace or fix and if so what?
on 2006 Hyundai Sonata

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Do I replace catalytic converter and O2 sensors?
(1) Answer
(2) Comments
Wetry, I called my local dealer hear in Fort Myers, Florida. They said the cat system is 8 years or 80,000 miles.
Of course Kizzie will have to take it to the dealer to have it checked out. Of course Kizzie will be at the mercy of the dealer.

OH, by the way it's a COLD 75 degrees here, yuk-yuk-yuk.
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