Module Communications Network
NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 | Control Module Communication Bus A 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. |
| 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 | 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. |
| U0140 | Lost Communication With Body Control Module (GEM) | Audio control module (ACM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0140 | Lost Communication With Body Control Module (GEM) | Instrument cluster (IC) | 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 (PAM) | 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) | Rear entertainment module (RETM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | PAM | 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 (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. |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) | IC | 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) | Accessory protocol interface module (APIM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0184 | Lost Communication With Radio (ACM) | RETM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0184 | Lost Communication With Radio (ACM) | Satellite digital audio receiver system (SDARS) module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | RETM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0197 | Lost Communication With Telephone Control Module | ACM | DISREGARD this DTC. |
| U0197 | Lost Communication With Telephone Control Module | SDARS module | DISREGARD this DTC. |
| U0208 | Lost Communication With Seat Control Module (DSM) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that failed the network test. |
| U0238 | Lost Communication With Audio Digital Signal Proc. Module | ACM | DISREGARD this DTC. |
| U0244 | Lost Communication With Running Board Control Module (PRB) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module that failed the network test. |
| U0249 | Lost Communication With Rear Audio Control Unit | ACM | DISREGARD this DTC. |
| U0249 | Lost Communication With Rear Audio Control Unit | APIM | DISREGARD this DTC. |
| U0249 | Lost Communication With Rear Audio Control Unit | SDARS module | DISREGARD this DTC. |
| U0255 | Lost Communication With Front Control Interface Module | ACM | DISREGARD this DTC. |
| U0255 | Lost Communication With Front Control Interface Module | APIM | DISREGARD this DTC. |
| U0256 | Lost Communication With Front Display Interface Module | ACM | DISREGARD this DTC. |
| U0256 | Lost Communication With Front Display Interface Module | APIM | DISREGARD this DTC. |
| U1900 | CAN Communication Bus Fault-Receive Error | ACM | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Driver seat module (DSM) | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | IC | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Occupant classification system module (OCSM) | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Power running board (PRB) module | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | RCM | Go to Symptom Chart for module that failed the network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | 4X4 control module | Go to Symptom Chart for module that failed the network test. |
| U1901 | CAN #2 Communication Bus Fault - Receive Error | ABS module | REFER to VEHICLE DYNAMIC SYSTEMS article. |
| U2013 | Compass Module Is Not Responding | IC | REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article. |
| 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 article for a list of all DTCs. |
| U2023 | Fault Received From External Node | IC | 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 article for a list of all DTCs. |
| U2023 | Fault Received From External Node | PAM | 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 article for a list of all DTCs. |
| U2023 | Fault Received From External Node | 4X4 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 article for a list of all DTCs. |
| U2471 | Unexpected PRNDL State | PAM | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article for a list of all DTCs. |
| U2472 | Unexpected Ignition State | PAM | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed (VSS) | ACM | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed (VSS) | PAM | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article for a list of all DTCs. |
| U2510 | CAN - Invalid Data For Vehicle Security | IC | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| U2511 | CAN - Data Mis-Match (Receive Data Does Not Match Expected) | IC | RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |