My check engine light has been on for quite a while. I recently had a friend use their trouble code scanner on my vehicle and it gave me the codes of P2431 and P2433. I know that it has something to do with the secondary air injection pump. But I'm not sure what the problem may be or how to go about fixing it. I'm selling the car and want to find a way to get this taken care of in the next couple days. What advice would you give on my current situation?