2004 Dodge Durango 0440 & 0456 codes

Two years ago, I accidently drove my Durango into high water. Immediately after exiting the high water, the engine sputter for about 5 min. Then stopped, then the "Check Engine" light come on. Since that day, I haven't had any engine problems, only the "Check Engine" light. I was able to pass inspection last year by resetting the computer, but this year it didn't work. The inspection station said the computer hadn't reset yet & I neededto drive it approx. 100 miles for it to reset, then return within 15 days to complete the inspection. When I connected my truck to a diag. Computer, the above two codes appeared. Any specific ideas of what it could be?