What does these codes mean;P0430,P0420,P0344,P0430,P04320. Can I fix these mysel on 2003 Chrysler Concorde

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Asked by for the 2003 Chrysler Concorde
cat converter codes are the 420,430. the cam sensor is the 344.
can you fix it?? sure but replacing the cats is not an easy job. it pays around 2 hours for a shop but yourself may be double the time.
the 344 needs to be checked to verify the failure.