I just went out and checked again with the car running and off - 05 - evaporator temp sensor was at 101 with the car off and went down to 84 degrees with the car on and the ac running. What do you think?

Charles' method of retrieving continuous and intermittent code errors for the climate control system worked well on my 98 C280. I actually was able to delete my codes by scrolling with the auto button down to a "del" screen and hit the ^ and v buttons at the same time which deleted the codes and showed this "---" screen.

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1998 Black/Black C280 Sport w/ 81,000 miles