Communications Network
CONTROL SYSTEMS DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| U001 | 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. |
| U0028:08 | Vehicle Communication Bus A: Bus Signal / Message Failures | Restraints control module (RCM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, see PINPOINT TEST 2: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0028:88 | Vehicle Communication Bus A: Bus Off | RCM | 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 . |
| U0100:00 | Lost Communication With / PCM "A": No Sub Type Information | RCM | 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 ABS Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, see PINPOINT TEST 2: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0121 | Lost Communication with ABS Module | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, see PINPOINT TEST 2: THE ABS 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 ABS 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 . |
| U0131:87 | Lost Communication With Power Steering Control Module (PSCM): Missing Message | ABS module | 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) | HVAC module | 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 . |
| U0140:00 | Lost Communication with Body Control Module (SJB): No Sub Type Information | 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 |
| 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 . |
| U0151:87 | Lost Communication with Restraints Control Module: Missing Message | ABS module | 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 . |
| U0151:88 | Lost Communication with Restraints Control Module: Bus Off | 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. |
| U0154:00 | Lost Communication with Restraints Occupant Classification System Module: No Sub Type Information | RCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, see PINPOINT TEST 6: THE OCCUPANT CLASSIFICATION SENSOR MODULE (OCSM) 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 . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IC) Control Module: No Sub Type Information | 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 . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IC) Control Module: No Sub Type Information | RCM | 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 . |
| U0155:87 | Lost Communication With Instrument Panel Cluster (IC) Control Module: Missing Message | 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 . |
| U0162:00 | Lost Communication with Navigation Display Module: No Sub Type information | ACM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0164 | Lost Communication With HVAC Module | FDIM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0164 | Lost Communication with HVAC Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns. see PINPOINT TEST 15: THE HVAC MODULE DOES NOT RESPOND TO THE SCAN TOOL . |
| U0164:00 | Lost Communication with HVAC Module: No Sub Type Information | ACM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0184 | Lost Communication with Radio (ACM) | FCIM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0184 | Lost Communication with Radio (ACIM) | 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 . |
| U0193:00 | Lost Communication with Digital Audio Control Module "A": No Sub Type Information | ACM | 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. |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear "A": No Sub Type Information | ACM | 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. |
| U0197:00 | Lost Communication with Telephone Control Module: No Sub Type Information | ACM | 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. |
| U0238:00 | Lost Communication With Digital Audio Control Module "D": No Sub Type Information | ACM | 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 (RCU) | SDARS module | DISREGARD the DTC. The vehicle is not equipped with this feature. |
| U0249:00 | Lost Communication With Entertainment Control Module - Rear "B": No Sub Type Information | ACM | 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 . |
| U0255:00 | Lost Communication with Front Display Interface Module: No Sub Type Information | ACM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0256 | Lost Communication with Front Display Interface Module | ACM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0258 | Lost Communication with Front Display Interface Module | SDARS module | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0256:00 | Lost Communication with Front Controls Interface Module "A": No Sub Type Information | ACM | See ENTERTAINMENT SYSTEM DTC CHARTS . |
| U0401 | Invalid Data Received from ECM/PCM A | 4X4 control module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0401:00 | Invalid Data Received from / PCM: No Sub Type Information | ABS module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0401:00 | Invalid Data Received from / PCM: No Sub Type Information | RCM | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0415 | Invalid Data Received from ABS Module | 4X4 control module | RETRIEVE and REPAIR all non-network DTCs in the other modules on the network. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0420:87 | Invalid Data Received From Power Steering Control Module (PSCM): Missing Message | ABS module | RETRIEVE and FOLLOW non-network DTCs from the PSCM. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0423:00 | Invalid Data Received from Instrument Panel Control Module: No Sub Type Information | RCM | RETRIEVE and FOLLOW non-network DTCs from the IC. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0423:64 | Invalid Data Received from Instrument Panel Control Module: Signal Plausibility Failure | ABS module | RETRIEVE and FOLLOW non-network DTCs from the IC. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U0452:29 | Invalid Data Received from Restraints Control Module: Signal Invalid | ABS module | RETRIEVE and FOLLOW non-network DTCs from the ABS module. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U2472 | Unexpected Ignition State | IC | RETRIEVE and REPAIR ail non-network DTCs in the other modules on the network. See DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES 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 DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES for a list of all DTCs. |
| U261A | CAN Data / Configuration Setup Mismatch | IC | See HEADLAMPS . |