I got the exact same two codes, and it was a $0 simple fix, so fingers crossed this helps you. If you have changed coils or spark plugs recently, or worked around the driver side of your engine, its is really easy to accidently disconnect a vacuum hose off of your DIFFERENTIAL PRESSURE FEEDBACK EGR SENSOR. There are 2 vacuum tubes that hang from the bottom of this sensor and the slightest amount of pressure from your hand, tool, or part will disconnect one or both of these hoses. This sensor hides toward the top of the engine maybe a foot from the firewall, so its hard to find. But finding the hoses are easier as they tend to drape over the driver side valve cover. If either of those hoses is disconnected that's your problem. If one is loose it's connection is located beside the other hose connector. Good luck.