Newbie help needed - service engine light with codes
 

Reposted here - accidentally posted in general section...

Bought my daughter a 2006 S Convertible for a graduation present. Car was super clean, 41k, seller seemed like a decent guy. On the first day the check engine light came on. Autozone read the codes: PO313 "misfire with low fuel" and PO302 "cylinder misfire condition" (probable causes - plugged or faulty injector, vacuum leak, engine mechanical condition). Based on the two codes, I am assuming a fuel injector problem.

I would appreciate any advice on confirming, resolving, and what it might cost.

Thanks in advance