Join Now
International Automotive Technicians Network

U1255 Diagnostic Trouble Code Discussion for August 2014

Class 2 Communication Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC U1255
Help Request Posted
2003 Chevrolet Impala 3.4L No Start VIN: 2G1WF52EX3
U1255: Class 2 Communication Malfunction. ... then no fuel after a second. Scanned for codes and the PCM won’t communicate with the scanner. All other modules communicate and most have codes for missing class 2 serial data. (U1000, U1255,...
August 05, 2014