Module Communications Network System DTCS
Module Communications Network System DTC Chart
| DTC | Description | Source | Action |
|---|---|---|---|
| U0002 | High 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. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0020 | Low 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. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0073 | Control Module Communication Bus A Off | ABS module Headlamp Control Module (HCM) HVAC 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 | 4X4 control module HCM IC 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) Occupant Classification System Module (OCSM) |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| 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 D . |
| U0115 | Lost Communication With ECM /PCM - Secondary (SPCM) | ABS module | DISREGARD this DTC as it may have been set during module reprogramming. |
| U0121 | Lost Communication With Anti-Lock Brake System (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 . |
| U0126 | Lost Communication With Steering Angle Sensor Module | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST G . |
| U0126 | Lost Communication With Steering Angle Sensor Module | HCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, REFER to EXTERIOR LIGHTING . |
| U0140 | Lost Communication With Body Control Module (GEM ) | ACM (without navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0140 | Lost Communication With Body Control Module (GEM ) | Driver Seat Module (DSM) HVAC module |
GO to PINPOINT TEST I . |
| U0140 | Lost Communication With Body Control Module (GEM ) | IC Liftgate/Trunk Module (LTM) Parking Aid Module (PAM) |
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 | ACM
(with navigation) APIM Audio DSP . module GPSM |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| 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 C . |
| U0151:00 | Lost Communication With Restraints Control Module: No Sub Type Information | APIM OCSM |
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 . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | 4X4 control module ABS module DSM HCM . HVAC module LTM PAM SJB Steering Angle Sensor Module (SASM) |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST H . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | ACM (without navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | ACM
(with navigation) Audio DSP module GPSM |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC ) Control Module: No Sub Type Information | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0159 | Lost Communication With Parking Assist Control Module (PAM ) | ACM
(without navigation) IC |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST R . |
| U0159:00 | Lost Communication With Parking Assist Control Module: No Sub Type Information | ACM (with navigation) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST R . |
| U0162:00 | Lost Communication With Navigation Display Module: No Sub Type Information | ACM (with navigation) | 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 . |
| U0164:00 | Lost Communication With HVAC Control Module: No Sub Type Information | ACM (with navigation) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST J . |
| U016A:00 | Lost Communication With Global Positioning System Module (GPSM ): 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 ) | APIM SDARS module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0184:00 | Lost Communication With Radio: No Sub Type Information | APIM Audio DSP module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS ) | ACM (without navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193:00 | Lost Communication With SDARS module: No Sub Type Information | ACM (with navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | Lost Communication With Telephone Control Module | ACM
(without navigation) SDARS module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197:00 | Lost Communication With Telephone Control Module: No Sub Type Information | ACM
(with navigation) Audio DSP 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 N . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP ) | ACM (without navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0238:00 | Lost Communication With Digital Audio Control Module "D": No Sub Type Information | ACM (with navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0241 | Lost Communication With Headlamp Control Module (HCM ) | IC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST F . |
| U0246 | Lost Communication With Seat Control Module (DCSM ) | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST Q . |
| U0253 | Lost Communication With Accessory Protocol Interface Module | RCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to PINPOINT TEST S . |
| 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 R . |
| U0294 | Lost Communication With Powertrain Control Monitor 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 DTCs from the PCM. |
| U0401 | Invalid Data Received from ECM /PCM A | RCM | RETRIEVE and FOLLOW DTCs from the PCM. |
| U0401:00 | Invalid Data Received from ECM /PCM A: No Sub Type Information | OCSM | RETRIEVE and FOLLOW DTCs from the PCM. |
| U0415 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module | 4X4 control module | RETRIEVE and FOLLOW DTCs from the ABS module. |
| 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 IPC . |
| U0455 | Invalid Data Received From Restraints Occupant Classification System Module | RCM | RETRIEVE and FOLLOW DTCs from the OCSM . |
| U046B:00 | Invalid Data Received From Global Positioning System Module: No Sub Type Information | APIM | RETRIEVE and FOLLOW 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 | DSM | GO to SYMPTOM CHART for module that failed 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 | 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. REFER to MULTIFUNCTION ELECTRONIC MODULES for a list of all DTCs. |
| U2196 | Invalid 'Engine RPM' Data | HCM | RETRIEVE and FOLLOW DTCs from the PCM. |
| U2471 Unexpected | PRNDL State | HCM LTM |
RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2472 | Unexpected Ignition State | HCM IC |
RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U2472 | Unexpected Ignition State | LTM SJB |
RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2473 | Unexpected Vehicle Speed (VSS ) | ACM (without navigation) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U2473 | Unexpected Vehicle Speed (VSS ) | LTM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to BODY CLOSURES . |
| U2473 | Unexpected Vehicle Speed (VSS ) | SJB | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2510 | CAN - Invalid Data for Vehicle Security | IC | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| U2511 | CAN - Data Mis-Match (Receive Data Does Not Match Expected) | IC | RETRIEVE and FOLLOW non-network DTCs from other modules. 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. |