Module Communications Network DTCS
Module Communications Network DTC Chart
| DTC | Description | Source | Action |
|---|---|---|---|
| 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 | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST A . |
| U0100:00 | Lost Communication With ECM /PCM "A": No Sub Type Information | Accessory Protocol Interface Module (APIM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST A . |
| U0101 | Lost Communication With TCM | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST B . |
| U0102 | Lost Communication With Transfer Case Control Module (4x4CM) | TCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST E . |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module | TCM | 4X4 control module CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST C . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Audio Control Module (ACM) Instrument Cluster (IC) Parking Aid Module (PAM) Rear Entertainment Module (RETM) |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST H . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | ACM APIM Global Positioning System Module (GPSM) |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST H . |
| U0151:00 | Lost Communication With Restraints Control Module: No Sub Type Information | APIM | 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 PAM Smart Junction Box (SJB) |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST G . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: No Sub Type Information | ACM APIM GPSM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST G . |
| U0159 | Lost Communication With Parking Assist Control Module (PAM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST O . |
| U0159:00 | Lost Communication With Parking Assist Control Module "A": No Sub Type Information | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST O . |
| U0162:00 | Lost Communication With Navigation Display Module: No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0164 | Lost Communication With HVAC Control Module (EATC ) | SJB | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST I . |
| U0164:00 | Lost Communication With HVAC Control Module: No Sub Type Information | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST I . |
| U016A:00 | Lost Communication With Global Positioning System Module: No Sub Type Information | APIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST P . |
| U0184 | Lost Communication With Radio (ACM ) | RETM Satellite Digital Audio Receiver System (SDARS) module |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST J . |
| U0184:00 | Lost Communication With Radio: No Sub Type Information | APIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST J . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | ACM RETM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST K . |
| U0193:00 | Lost Communication With Digital Audio Control Module "A": No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM SDARS module |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST L . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear "A": No Sub Type Information | ACM APIM |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST L . |
| U0197 | Lost Communication With Telephone Control Module | ACM SDARS module |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST Q . |
| U0197:00 | Lost Communication With Telephone Control Module: 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 . |
| 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 . |
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | RCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST Q . |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | APIM GPSM |
RETRIEVE and FOLLOW non-network DTCs from the SJB . |
| U0423:00 | Invalid Data Received From Instrument Panel Cluster (IPC ) Control Module: No Sub Type Information | APIM GPSM |
RETRIEVE and FOLLOW non-network DTCs from the IC . |
| U046B:00 | Invalid Data Received From Global Positioning System Module: No Sub Type Information | APIM | RETRIEVE and FOLLOW non-network DTCs from the GPSM . |
| U0485:00 | Invalid Data Received From Radio: No Sub Type Information | APIM | RETRIEVE and FOLLOW non-network DTCs from the ACM . |
| U1900 | CAN Communication Bus Fault-Receive Error | 4X4 control module ABS module ACM Driver Seat Module (DSM) IC Occupant Classification System Module (OCSM) Power Running Board (PRB) module RCM |
NOTE:
DTC U1900 sets in the 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. 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 VEHICLE DYNAMIC SYSTEMS . |
| U2013 | Compass Module Is Not Responding | IC | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U2023 | Fault Received From External Node | 4X4 control module ABS module IC 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 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 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 for a list of all DTCs. |
| U2473 | Unexpected Vehicle Speed (VSS ) | ACM PAM |
RETRIEVE and FOLLOW non-network DTCs from the other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2510 | CAN - Invalid Data For Vehicle Security | IC | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| U2511 | CAN - Data Mis-Match (Receive Data Does Not Match Expected) | IC | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| U3000:88 | Control Module: Bus Off | APIM | The module could not communicate on the network at a point in time. The fault is currently not present since the module is currently communicating with the scan tool reporting this DTC. CLEAR the DTC. REPEAT the network test with the scan tool. |