Module Communications Network
DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 | Control Module Communication Bus Off | TCM | REPAIR all other DTCs first. If DTC U0073 is still present, GO to PINPOINT TEST Q . |
| U0100 | Lost Communication With ECM/PCM | TCM | REPAIR all other DTCs first. If DTC U0100 is still present, GO to PINPOINT TEST PC . |
| U0121 | Lost Communication With ABS Module | TCM | REPAIR all other DTCs first. If DTC U0121 is still present, GO to PINPOINT TEST PC . |
| U0140 | Lost Communication With GEM/SJB | Instrument Cluster | REPAIR all other DTCs first. If DTC U0140 is still present, GO to PINPOINT TEST PC . |
| U0155 | Lost Communication With Instrument Cluster | TCM | REPAIR all other DTCs first. If DTC U0155 is still present, GO to PINPOINT TEST PC . |
| U0159 | Lost Communication With Parking Aid Module | Instrument Cluster | REPAIR all other DTCs first. If DTC U0159 is still present, GO to PINPOINT TEST PC . |
| U0208 | Lost Communication With DSM | Instrument Cluster | REPAIR all other DTCs first. If DTC U0208 is still present, GO to PINPOINT TEST PC . |
| U0244 | Lost Communication With PRB/Retractable Running Board Module | Instrument Cluster | REPAIR all other DTCs first. If DTC U0244 is still present, GO to PINPOINT TEST PC . |
| U1900 | CAN Communication Bus Fault | DSM | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | Audio Unit | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | ABS Module | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST Q . |
| U1900 | CAN Communication Bus Fault | Occupant Classification Sensor | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST Q . |
| U1900 | CAN Communication Bus Fault | Instrument Cluster | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST Q . |
| U1900 | CAN Communication Bus Fault | SJB | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | Parking Aid Module | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | Family Entertainment System/Digital Versatile Disk (DVD) Player | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | Retractable Running Board Module | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | RCM | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST Q . |
| U1900 | CAN Communication Bus Fault | Satellite Radio Receiver | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST P . |
| U1900 | CAN Communication Bus Fault | 4WD Control Module | REPAIR all other DTCs first. If DTC U1900 is still present, GO to PINPOINT TEST Q . |
| U2023 | Fault Received From External Node | ABS Module | U2023 is set when a module receives invalid network data from another module with a faulted input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2023 | Fault Received From External Node | 4WD Control Module | U2023 is set when a module receives invalid network data from another module with a faulted input. RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |