What is causing these trouble codes??

Hello all, I just bought a 2002 Camaro SS with just 14k miles. Service Engine Soon light came on soon after purchase.I did use a code scanner and P0172 and P0175 came. Can any one tell me why I am getting a rich condition and what what may be causing these codes ? Also P0420 was in the scanner, I guess the catalytic converter is not working as well.Has any one ever had all these codes occur on there Camaro at the same time and are they related? thanks for any help.

it may be because of O2 sensors..if it is, you prolly have warranty w. GM to get them changed! i think its 7yrs 70,000 mi.

Rule #1 when buying a used car, run through all the routine maintnance items so you know what you are in for and what you just invested in, and how it has been kep up.