CVO 1/14/201212 System normal.
33 map sensor signal out of range, high.
55 a/d converter error or pcm not grounded or lean fuel or grounded reference voltage.
CVO 1/14/201212 memory to controller has been cleared within 50-100 engine starts
33 a/c clutch relay circuit, open or short detected
55 end of message
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HouseCallAuto 1/14/2012What is the symptom or running complaint because the fault code 33 will not cause a running issue and 12 and 55 are the beginning and end of message and need no action.