Communication Network
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| U0002 | High Speed CAN Communication Bus Performance | Instrument Cluster (IC) | 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. |
| U0010:88 | Medium Speed CAN Communication Bus: Bus Off | ABS module | 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. |
| U0020 | Medium Speed CAN Communication Bus Performance | IC | 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. |
| U0073 | Control Module Communication Bus A Off | ABS module | 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. |
| U0074 | Control Module Communication Bus B Off | ABS module | REFER to VEHICLE DYNAMIC SYSTEMS . |
| U0100 | Lost Communication With ECM /PCM | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A . |
| U0100 | Lost Communication With ECM /PCM | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A . |
| U0100 | Lost Communication With ECM /PCM | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A . |
| U0100 | Lost Communication With ECM /PCM | Occupant Classification System Module (OCSM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A . |
| U0100 | Lost Communication With ECM /PCM | Restraints Control Module (RCM) | 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) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0102 | Lost Communication With Transfer Case Control Module (4x4CM) | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST F . |
| 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 F . |
| 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, Go To PINPOINT TEST B . |
| 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, Go To PINPOINT TEST B . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Audio Control Module (ACM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Driver Seat Module (DSM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Front Display Interface Module (FDIM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Liftgate/Trunk Module (LTM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Rear Entertainment Module (RETM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140:00 | Lost Communication With Body Control Module (GEM ): 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 . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0140:00 | Lost Communication With Body Control Module (GEM ): No Sub Type Information | Audio Digital Signal Processing (DSP) module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140:00 | Lost Communication With Body Control Module (GEM ): No Sub Type Information | Front Controls Interface Module (FCIM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140:87 | Lost Communication With Body Control Module (GEM ): Missing Message | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| U0140:87 | Lost Communication With Body Control Module (GEM ): Missing Message | Parking Aid Module (PAM) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I . |
| 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 . |
| U0151 | Lost Communication With Restraints Control Module | OCSM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST D . |
| U0151:00 | Lost Communication With Restraints Control Module: No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0154 | Lost Communication With Restraints Occupant Classification System Module (OCS ) | RCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST E . |
| U0154:00 | Lost Communication With Restraints Occupant Classification System Module (OCS ): No Sub Type Information | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST E . |
| 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, Go To PINPOINT TEST C . |
| 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, Go To PINPOINT TEST C . |
| 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, Go To PINPOINT TEST C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | DSM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C . |
| 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, Go To PINPOINT TEST C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | LTM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C . |
| 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, Go To PINPOINT TEST C . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC ) 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 C . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: No Sub Type Information | Audio DSP module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C . |
| U0155:87 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: Missing Message | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C . |
| U0155:87 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: Missing Message | PAM | 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 | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST P . |
| 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 P . |
| 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 P . |
| U0163:87 | Lost Communication With Navigation Control Module: Missing Message | HVAC module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0164 | Lost Communication With HVAC Control Module (EATC ) | FCIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0164 | Lost Communication With HVAC Control Module (EATC ) | FDIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| 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 J . |
| U0184 | Lost Communication With Radio (ACM ) | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184 | Lost Communication With Radio (ACM ) | FDIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184 | Lost Communication With Radio (ACM ) | RETM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184:00 | Lost Communication With Radio: No Sub Type Information | APIM | 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 . |
| U0184:00 | Lost Communication With Radio (ACM ): No Sub Type Information | FCIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | ACM | DISREGARD this DTC. This vehicle cannot be equipped with a SDARS module. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | FDIM | DISREGARD this DTC. This vehicle cannot be equipped with a SDARS module. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | RETM | DISREGARD this DTC. This vehicle cannot be equipped with a SDARS module. |
| U0193:00 | Lost Communication With Digital Audio Control Module (SDARS ): No Sub Type Information | ACM | DISREGARD this DTC. This vehicle cannot be equipped with a SDARS module. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | FDIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear (AUX): No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear "A": No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear (AUX): No Sub Type Information | Audio DSP module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | Lost Communication With Telephone Control Module | ACM |
NOTE:
This DTC refers to the APIM
, not the telephone control module. REFER to
INFORMATION AND ENTERTAINMENT SYSTEMS
. |
| U0197 | Lost Communication With Telephone Control Module | FDIM |
NOTE:
This DTC refers to the APIM
, not the telephone control module. REFER to
INFORMATION AND ENTERTAINMENT SYSTEMS
. |
| U0197:00 | Lost Communication With Telephone Control Module: No Sub Type Information | ACM |
NOTE:
This DTC refers to the APIM
, not the telephone control module. REFER to
INFORMATION AND ENTERTAINMENT SYSTEMS
. |
| U0197:00 | Lost Communication With Telephone Control Module: No Sub Type Information | Audio DSP module |
NOTE:
This DTC refers to the APIM
, not the telephone control module. REFER to
INFORMATION AND ENTERTAINMENT SYSTEMS
. |
| U0208 | Lost Communication With Seat Control Module (DSM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST O . |
| 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 H . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP ) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP ) | FDIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0238:00 | Lost Communication With Digital Audio Control Module "D": No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| 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 . |
| U0255 | Lost Communication With Front Controls Interface Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0255 | Lost Communication With Front Controls Interface Module | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0255:00 | Lost Communication With Front Display Interface Module: No Sub Type Information | APIM | 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 | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256 | Lost Communication With Front Display Interface Module | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256:00 | Lost Communication With Front Control Interface Module: No Sub Type Information | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256:00 | Lost Communication With Front Controls Interface Module "A": No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0256:87 | Lost Communication With Front Control Interface Module: Missing Message | HVAC module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0294 | Lost Communication With Powertrain Control Module | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A . |
| U0401 | Invalid Data Received from ECM /PCM A | 4X4 control module | RETRIEVE and FOLLOW non-network DTCs from the PCM. |
| U0415 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module | 4X4 control module | RETRIEVE and FOLLOW non-network DTCs from the ABS module. |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | APIM | 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 | RETRIEVE and FOLLOW non-network DTCs from the IPC . |
| U0485:00 | Invalid Data Received From Radio: No Sub Type Information | APIM | RETRIEVE and FOLLOW non-network DTCs from the ACM . |
| U2005:12 | Vehicle Speed: Circuit Short To Battery | ACM | DISREGARD this DTC. The vehicle does not utilize a hardwired Vehicle Speed Sensor (VSS) input. |
| U2013 | Compass Module Is Not Responding | IC | REFER to ELECTRONIC COMPASS . |
| U2023 | Fault Received From External Node | ABS module | DTC U2023 is set when the ABS 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. |
| U2023 | Fault Received From External Node | IC | DTC U2023 is set when the IC 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. |
| U2023 | Fault Received From External Node | OCSM | DTC U2023 is set when the OCSM 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. |
| U2023 | Fault Received From External Node | RCM | DTC U2023 is set when the RCM 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 | LTM | REFER to BODY CLOSURES . |
| U2472 | Unexpected Ignition State | IC | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U2472 | Unexpected Ignition State | LTM | REFER to BODY CLOSURES . |
| U2472 | Unexpected Ignition State | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2473 | Unexpected Vehicle Speed (VSS ) | LTM | REFER to BODY CLOSURES . |
| U2473 | Unexpected Vehicle Speed (VSS ) | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| 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) . |
| U2515 | Missing Message For Adaptive Cruise Control | ABS module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to SPEED CONTROL . |
| 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. |