Well you have PO171 - system to lean bank one. That could be, dirty MAF, bad O2 sensor, and a few other things. First off to clear the PO171 I would clean your MAF. You must use non-resiude eletric cleaner incase you didnt know. Secondly with the PO455, your looking for a gasoline leak, look under the car after you drive somewhere, look at the hose going from the cap to the tank for leaks.
