Module Communications Network DTCS
DTC INDEX
| 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. |
| U0073 | Control Module Communication Bus A Off | Vehicle Dynamics Module (VDM) | 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 | 4X4 control module ABS module Instrument Cluster (IC) VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test A . |
| U0102 | Lost Communication With Transfer Case Control Module (4x4CM) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test E . |
| 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, GO to Pinpoint Test E . |
| U0121 | Lost Communication With ABS Control Module | 4X4 control module IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test B . |
| U0122 | Lost Communication With Vehicle Dynamics Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test F . |
| U0140 | Lost Communication With Body Control Module (GEM ) | ABS module Driver Seat Module (DSM) IC Liftgate/Trunk Module (LTM) Parking Aid Module (PAM) VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test G . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Audio Front Control Module (ACM) Audio Rear Control Unit (RCU) module Global Positioning System Module (GPSM) |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0140:00 | Lost Communication With Body Control Module (GEM): No Sub Type Information | ACM Audio Digital Signal Processing (DSP) module GPSM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test G . |
| U0151 | Lost Communication With Restraints Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test D . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ABS module DSM LTM PAM
Smart Junction Box (SJB) VDM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test C . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IC) Control Module: No Sub Type Information |
ACM Audio DSP module GPSM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test C . |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) |
ACM IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test Q . |
| U0159:00 | Lost Communication With Parking Assist Control Module (PAM ): No Sub Type Information |
ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test Q . |
| U0164 | Lost Communication With HVAC Control Module (EATC ) |
IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test H . |
| U0164:00 | Lost Communication With HVAC Control Module (EATC): No Sub Type Information |
ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test H . |
| U0184 | Lost Communication With Radio (ACM ) | Accessory Protocol Interface Module (APIM) Audio DSP module Audio RCU module Satellite Digital Audio Receiver System (SDARS) module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184:00 | Lost Communication With Radio (ACM ): No Sub Type Information | Audio DSP module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | ACM Audio RCU module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193:00 | Lost Communication With Digital Audio Control Module (SDARS): No : Sub Type Information |
ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM APIM SDARS module Audio DSP module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear (AUX): No Sub Type Information | ACM Audio DSP module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | No Communication With the APIM | ACM SDARS module |
This DTC refers to the APIM , not the telephone control module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197:00 | No Communication With the APIM : No Sub Type Information | ACM Audio DSP module |
This DTC refers to the APIM , not the telephone control module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0208 | Lost Communication With Seat Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test P . |
| U0230 | Lost Communication With Rear Gate Module (LTM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test I . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0238:00 | Lost Communication With Digital Audio Control Module "D" (DSP): No : Sub Type Information |
ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0244 | Lost Communication With Running Board Control Module (PRB ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test N . |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU ) | ACM APIM SDARS module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0249:00 | Lost Communication With Entertainment Control Module - Rear "B" (RCU): No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0255 | Lost Communication With Front Controls Interface Module | APIM SDARS module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0255:00 | Lost Communication With Front Display Interface Module: No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256 | Lost Communication With Front Display Interface Module | APIM SDARS module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256:00 | Lost Communication With Front Controls Interface Module: No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0401 | Invalid Data Received from ECM/PCM A | ABS module | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0414 | Invalid Data Received from Four-Wheel Drive Clutch Control Module | ABS module | Retrieve and follow DTCs from the 4X4 control module. |
| U0415 | Invalid Data Received from ABS Control Module | 4X4 control module | RETRIEVE and FOLLOW the DTCs from the ABS module. |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | GPSM | RETRIEVE and FOLLOW DTCs from the SJB . |
| U0423:00 | Invalid Data Received From Panel Cluster Control Module: No Sub Type Information | GPSM | RETRIEVE and FOLLOW DTCs from the IC . |
| U1900 | CAN Communication Bus Fault-Receive Error | 4X4 control module Power Running Board (PRB) module Restraints Control Module (RCM) |
GO to Symptom Chart for the module that failed the network test. |
| U1901 | CAN Network #2 Communication Bus Fault-Receive Error | ABS module | REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . |
| U2011 | Module Transmitted Invalid Data (Non SCP ) | VDM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to DIAGNOSIS AND TESTING . |
| U2013 | Compass Module is not Responding | IC | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U2023 | Fault Received From External Node | 4X4 control module IC PAM | DTC 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 DIAGNOSIS AND TESTING for a list of all DTCs. |
| U2471 | Unexpected PRNDL State | DSM LTM PAM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to DIAGNOSIS AND TESTINGDIAGNOSIS AND TESTING . |
| U2472 | Unexpected Ignition State | IC LTM PAM SJB | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to DIAGNOSIS AND TESTINGDIAGNOSIS AND TESTING . |
| U2473 | Unexpected Vehicle Speed (VSS ) | ACM PAM LTM SJB | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to DIAGNOSIS AND TESTINGDIAGNOSIS AND TESTING . |