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U1255 Diagnostic Trouble Code Discussion for May 2010

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1255
Help Request Posted
1999 Cadillac DeVille 4.6L Stall VIN: 1G6KD54Y1X
U1255: class 2 initialization error. The car runs fine when it is cold, but when the temp gets to N.O.T. it has a tendency to cut off when you come to a stop. The ipc temperature reading is indicating 220F, but direct temperature reading is at water outlet is reading about 215F. We also replaced ...
May 25, 2010
1999 Cadillac DeVille 4.6L Stall VIN: 1G6KD54Y1X
U1255: class 2 initialization error. The car runs fine when it is cold, but when the temp gets to N.O.T. it has a tendency to cut off when you come to a stop. The ipc temperature reading is indicating 220F, but direct temperature reading is at water outlet is reading about 215F. We also replaced ...
May 25, 2010