DTC Chart - Communications Network
NOTE:
DTC U1900 will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module.
COMMUNICATIONS NETWORK DTC CHART
| DTC | Description | Source | Action |
|---|---|---|---|
| U0001 | High Speed CAN Communication Bus | ABS 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. |
| U0100 | Lost Communication with ECM/PCM | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 1: THE PCM DOES NOT RESPOND TO THE SCAN TOOL OR NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION . |
| U0100 | Lost Communication with ECM/PCM | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 1: THE PCM DOES NOT RESPOND TO THE SCAN TOOL OR NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION . |
| U0100 | Lost Communication with ECM/PCM | Instrument cluster (IC) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 1: THE PCM DOES NOT RESPOND TO THE SCAN TOOL OR NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION . |
| U0100 | Lost Communication with ECM/PCM | Power steering control module (PSCM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 1: THE PCM DOES NOT RESPOND TO THE SCAN TOOL OR NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION . |
| U0114 | Lost Communication With Four-Wheel Drive Clutch Control Module | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 3: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0114 | Lost Communication with Four-Wheel Drive Clutch Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 3: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0121 | Lost Communication with Anti-Lock Brake System (ABS) Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 2: THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0121 | Lost Communication with Anti-Lock Brake System (ABS) Control Module | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 2: THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0129 | Lost Communication With Brake System Control Module | PCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 2: THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0131 | Lost Communication With PSCM | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 7: THE POWER STEERING CONTROL MODULE (PSCM) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0140 | Lost Communication with Body Control Module (SJB) | Front controls interface module (FCIM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 8: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0140 | Lost Communication with Body Control Module (SJB) | Audio control module (ACM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 8: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL |
| U0140 | Lost Communication With Body Control Module (SJB) | Front display interface module (FDIM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 8: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0140 | Lost Communication with Body Control Module (SJB) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 8: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0151 | Lost Communication with Restraints Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 5: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0151 | Lost Communication with Restraints Control Module | Occupant classification sensor module (OCSM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 5: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | FDIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | PCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | PSCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | SJB | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0155 | Lost Communication with Instrument Panel Cluster (IC) Control Module | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, See PINPOINT TEST 4: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL . |
| U0184 | Lost Communication with Radio (ACM) | FCIM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0184 | Lost Communication with Radio (ACM) | FDIM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0184 | Lost Communication with Radio (ACM) | Satellite digital audio receiver system (SDARS) module | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0193 | Lost Communication with Digital Audio Control module (SDARS) | ACM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0193 | Lost Communication with Digital Audio Control module (SDARS) | FDIM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM | DISREGARD the DTC. A DVD player is not available on this vehicle. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | FDIM | DISREGARD the DTC. A DVD player is not available on this vehicle. |
| U0196 | Lost Communication with Entertainment Control Module - Rear (AUX) | SDARS module | DISREGARD the DTC. A DVD player is not available on this vehicle. |
| U0197 | Lost Communication with Telephone Control Module | ACM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0197 | Lost Communication with Telephone Control Module | FDIM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0197 | Lost Communication with Telephone Control Module | SDARS module | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | ACM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | FDIM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | ACM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | FDIM | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | SDARS module | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0255 | Lost Communication with Front Controls Interface Module | ACM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0255 | Lost Communication with Front Controls Interface Module | SDARS module | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0256 | Lost Communication with Front Display Interface Module | ACM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0256 | Lost Communication with Front Display Interface Module | SDARS module | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U0401 | Invalid Data Received from ECM/PCM A | 4X4 control module | RETRIEVE and FOLLOW DTCs from the PCM. |
| U0402 | Invalid Data Received From Four-Wheel Drive Clutch Control Module | ABS module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U0414 | Invalid Data Received From Four-Wheel Drive Clutch Control Module | ABS module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U0415 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module | 4X4 control module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER 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. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2023 | Fault Received From External Node | PSCM | 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. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2472 | Unexpected Ignition State | IC | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2472 | Unexpected Ignition State | SJB | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed | ACM | See ENTERTAINMENT SYSTEM - DTC CHARTS . |
| U2473 | Unexpected Vehicle Speed | SJB | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2510 | Invalid Data for Vehicle Security | IC | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U2511 | CAN - Data Mis-Match (Receive data does not match expected) | IC | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See SYMPTOM TROUBLESHOOTING CHART -- POWER DOOR LOCKS/KEYLESS ENTRY REMOTE TRANSMITTER for a list of all DTCs. |
| U261A | CAN Data/Configuration Setup Mismatch | IC | See HEADLAMPS . |