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Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description
B1000  ECU Malfunction
B1001  Option Configuration Error
B1327  Device Power No. 1 Circuit Low
B1328  Device Power No. 1 Circuit High
B1372  Device Ignition No. 1 Circuit Low
B1382  Device Ignition Accessory Circuit Low
B2965  Key-In-Ignition Circuit Open
U1000  Class-2 Serial Data Link Malfunction
U1016 (1) Lost Communications With Engine Controls System
U1040 (2) Lost Communications With Electronic Brake/Traction Controls System
U1064  Lost Communications With BCM
U1088  Lost Communications With SDM
U1096  Lost Communications With IPC
U1300  Class-2 Serial Data Link Low
U1301  Class-2 Serial Data Link High
U2100 (3) Controller Area Network BUS Communications Malfunction
U2103 (4) Fewer Controllers On BUS Than Programmed
U2104 (4) Controller Area Network BUS Reset Counter Overrun
U2105  Lost Communications With ECM
U2106  Lost Communications With TCM
U2107  Lost Communications With BCM
(1) Applies to 4-cylinder models only.
(2) Testing information for DTC U1040 is unavailable. To aid in diagnostics, see TEST C: NO COMMUNICATIONS WITH ELECTRONIC BRAKE/TRACTION CONTROLS SYSTEM  under SYSTEM TESTS.
(3) Applies to V6 models only.
(4) This DTC will always be set along with a DTC regarding a specific module connected on the CAN data line. Use the specific module DTC for diagnosis.
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