Oops I forgot to include the "REST" button results:
01 98 F
02 92 F - 104 F
03 67 F - 75 F
05 90 F
06 141 - 185
07 13.6 - 17.7
08 127 - 131
09 33 F - 35 F
10 495
20 02.0
21 060 - 070
22 000
23 000
24 13.5 - 13.7
40 03
41 03
42 02
43 6 - C
50 66 F - 68 F
51 LO
52 50 F
54 OFF

My diagnostic info doesn't quite match some of the charts listed throughout this thread and the error code list on Steve's article doesn't quite match mine -- if my 241 is his B1241 then it means refrigerant fill?? The thing was blowing nice cold air on the way to the dealership and nothing on the way home ... is it possible that they mistakenly did something wrong causing the ac to stop working?

Thanks in advance to anyone that can help me and thank you to those who contributed to this thread - it is because of you I got my ac back without another wasted day trip to the dealer - I just hope I don't have to go back again for a while

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