2005 chrysler 300 engine light on?

My engine light has been on for 2 weeks now. I haven't experienced any difference in my car while driving with the light on. The codes that the OBDII give are P0406 %26amp; P2008. The P0406 says exhaust gas recirculation sensor A circuit high. The P2008 says intake manifold runner control (IMRC) solenoid control circuit. Are these big problems?? Easy to fix or do I have to bite the bullet and spend a ton of money at the dealership?? Thanks|||dont need dealership when there ar shops who do nothing but work on car where dealer in busniss to sell cars and code reader only tell what it might be and you know that already cant repair it yourself a shop man not a dealership which is highest place to go and less chance they get it right shop man wil save you money stop going to dealership for work go to a shop|||it shouldnt cost to much money to fix it maybe a hundred, if you pay anymore than 200 dollars to fix it your getting ripped off!|||I would start by changing the gas cap first.|||which engine 3.5l v6