Another bit of information to add to my last message about destroying a new MAS control unit. The check engine light came on about the same time that the compressor stopped. The trouble code is 17, which is for a oxygen sensor lead either shorted to ground or B+. The oxygen sensor is new, and the check engine light has been silent since it was installed. It seems like too much of a coincidence to ignore, but I fail to see any connection between an A/C failure and the oxygen sensor. Any thoughts would be appreciated.

Thanks,

Walt Lake