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U1000 Diagnostic Trouble Code Discussion for August 2011

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2006 Saturn Ion-3 2.4L No Start VIN: 1G8AL55B56
U1000: Loss of class 2 serial data in every module. Vehicle came in with slight drivabilty complaint and C.E.L. Scanned and had codes P0011-intake cam position sys performance. P0128-Coolant thermostat. P0300- Random/multiple misfire detected. P1174- Fuel trim cylinder balance Bank 1. Engine mechanically good. ...
August 03, 2011
2005 Nissan Xterra SE 4.0L No Start VIN: 5N1AN08W95
U1000: Controller Area Network Line Malfunction. Truck came in for no crank condition and intermittently starts out from wrong gear. Check system found the 2 codes listed and have no communication with the TCM. Replaced the relay in the IPDM and then found the AT/ECM fuse missing from IPDM fuse location, rep...
August 11, 2011
2006 Saturn Ion-3 2.4L No Start VIN: 1G8AL55B56
U1000: Loss of class 2 serial data in every module. Vehicle came in with slight drivabilty complaint and C.E.L. Scanned and had codes P0011-intake cam position sys performance. P0128-Coolant thermostat. P0300- Random/multiple misfire detected. P1174- Fuel trim cylinder balance Bank 1. Engine mechanically good. ...
August 03, 2011
2005 Nissan Xterra SE 4.0L No Start VIN: 5N1AN08W95
U1000: Controller Area Network Line Malfunction. Truck came in for no crank condition and intermittently starts out from wrong gear. Check system found the 2 codes listed and have no communication with the TCM. Replaced the relay in the IPDM and then found the AT/ECM fuse missing from IPDM fuse location, rep...
August 11, 2011