Module Communications Network
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 | Control Module Communication Bus Off | Transmission control module (TCM) | The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | TCM | The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | 4WD control module | The module could not communicate on the network at a point in time. The fault is currently not present. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0101 | Lost Communication With TCM | 4WD control module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0102 | Lost Communication With Transfer Case Control Module (4x4CM) | TCM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | TCM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | 4WD control module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0140 | Lost Communication With Body Control Module (GEM) | Audio unit | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0140 | Lost Communication With Body Control Module (GEM) | DVD player | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0140 | Lost Communication With Body Control Module (GEM) | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0140 | Lost Communication With Body Control Module (GEM) | Parking aid module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0154 | Lost Communication With Restraints Occupant Classification System Module (OCS) | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | Audio unit | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | Parking aid module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | Smart junction box | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) | Audio unit | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0164 | Lost Communication With HVAC Control Module (EATC) | SJB | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0184 | Lost Communication With Radio (ACM) | DVD player | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184 | Lost Communication With Radio (ACM) | Satellite radio receiver | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | Audio unit | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | DVD player | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | Audio unit | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | Satellite radio receiver | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0208 | Lost Communication With Seat Control Module | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U0244 | Lost Communication With Running Board Control Module (PRB) | Instrument cluster | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that fails the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | ABS module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Audio unit | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Driver seat module (DSM) | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Instrument cluster | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Occupant classification sensor module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Parking aid module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Power running board module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | RCM | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | 4WD | Go to Symptom Chart for module that failed network test. |
| U1901 | CAN Network #2 Communication Bus Fault - Receive Error | ABS | REFER to VEHICLE DYNAMIC SYSTEMS . |
| 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 | Instrument cluster | 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 | Parking aid 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 | 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. |
| U2471 | Unexpected PRNDL State | Parking aid module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2472 | Unexpected Ignition State | Parking aid module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed (VSS) | Audio unit | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed (VSS) | Parking aid module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2510 | CAN - Invalid data for Vehicle Security. | Instrument cluster | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2511 | CAN - Data Mis-Match (Receive data does not match expected) | Instrument cluster | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |