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U1255 Diagnostic Trouble Code Discussion for November 2015

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1255
Help Request Posted
2002 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GS64C42
U1255: Class 2 data link malfunction. ... drivability issues. Started, idled well and drove down the road fine. I noticed a print-out of various codes from an AutoZone on the front passenger seat. On it were 6 codes including a P0340 for cam sensor. Cleared all codes and the first to come back was...
November 24, 2015