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Module Communications Network DTCS

COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Action
U0001:88 High Speed CAN  Communication Bus: Bus Off Cruise-Control Module (C-CM) Power Steering Control Module (PSCM) 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.
U0002:88 High Speed CAN  Communication Bus Performance: Bus Off Instrument Panel Cluster (IPC) 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.
U0011:88 Medium Speed CAN  Communication Bus Performance: Bus Off IPC  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) 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.
U0028:88 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.
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. 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 ABS module CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL .
U0100:00 Lost Communication With ECM  /PCM "A": No Sub Type Information Accessory Protocol Interface Module (APIM)
C-CM 
IPC 
Occupant
Classification System Module (OCSM) Power Steering Control Module (PSCM)
RCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL .
U0100:87 Lost Communication With ECM  /PCM "A": Missing Message Remote Function Actuator (RFA) module CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL .
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 H: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0102:00 Lost Communication With Transfer Case Control Module: No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST H: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0104:00 Lost Communication With Cruise Control Module: No Sub Type Information Head Up Display (HUD) module
IPC 
ABS module
RCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST I: THE CRUISE-CONTROL MODULE (C-CM) DOES NOT COMMUNICATE WITH THE SCAN TOOL .
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: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information APIM 
C-CM 
IPC 
PSCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST B: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0131 Lost Communication With Power Steering Control Module (PSCM  ) ABS module CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST D: THE POWER STEERING CONTROL MODULE (PSCM) DOES NOT RESPOND TO THE SCAN TOOL .
U0131:00 Lost Communication With Power Steering Control Module: No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST D: THE POWER STEERING CONTROL MODULE (PSCM) DOES NOT RESPOND TO THE SCAN TOOL .
U0140 Lost Communication With Body Control Module (GEM  ) Audio Control Module (ACM)
Driver Door Module (DDM)
Driver Seat Module (DSM)
Front Controls
Interface Module (FCIM)
Front Display
Interface Module (FDIM)
Interior Lighting
Control Module (ILCM)		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST U: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL .
U0140:00 Lost Communication With Body Control Module: No Sub Type Information ACM 
APIM 
Audio Digital Signal Processing (DSP) module
FCIM 
Global Positioning System Module (GPSM)
HVAC module
IPC 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST U: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL .
U0140:87 Lost Communication With Body Control Module): Missing Message RFA  module
HVAC module		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST U: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL .
U0151 Lost Communication With Restraints Control Module ABS module CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST E: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL .
U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information APIM 
IPC 
OCSM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST E: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL .
U0154:00 Lost Communication With Restraints Occupant Classification System Module: No Sub Type Information IPC 
RCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST F: THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DOES NOT COMMUNICATE WITH THE SCAN TOOL .
U0155 Lost Communication With Instrument Panel Cluster (IPC  ) Module 4X4 control module
ABS module
ACM 
DSM 
FDIM 
GPSM 
Smart Junction Box
(SJB)		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C: THE INSTRUMENT PANEL CLUSTER (IPC) DOES NOT RESPOND TO THE SCAN TOOL .
U0155:00 Lost Communication With Instrument Panel Cluster (IPC  ) Control Module: No Sub Type Information ACM 
APIM 
Audio DSP  module
C-CM 
HUD  module
HVAC module
RCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C: THE INSTRUMENT PANEL CLUSTER (IPC) DOES NOT RESPOND TO THE SCAN TOOL .
U0155:87 Lost Communication With Instrument Panel Cluster (IPC  ) Control Module: Missing Message RFA  module
HVAC module		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST C: THE INSTRUMENT PANEL CLUSTER (IPC) DOES NOT RESPOND TO THE SCAN TOOL .
U0158:00 Lost Communication With Head Up Display: No Sub Type Information C-CM  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST G: THE HEAD UP DISPLAY (HUD) MODULE DOES NOT RESPOND TO THE SCAN TOOL .
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 J: THE PARKING AID MODULE (PAM) DOES NOT RESPOND TO THE SCAN TOOL .
U0159:00 Lost Communication With Parking Assist Control Module "A": No Sub Type Information ACM 
IPC 
PSCM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST J: THE PARKING AID MODULE (PAM) DOES NOT RESPOND TO THE SCAN TOOL .
U0161:00 Lost Communication With Compass Module: No Sub Type Information IPC  REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
U0162:00 Lost Communication With Navigation Display Module: No Sub Type Information ACM  REFER to INFORMATION AND ENTERTAINMENT SYSTEMS .
U0163:00 Lost Communication With Navigation Control Module: No Sub Type Information HVAC module
IPC 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST N: THE FRONT CONTROLS INTERFACE MODULE (FCIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0164 Lost Communication With HVAC Control Module (EATC  ) FCIM 
FDIM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST V: THE HVAC MODULE DOES NOT RESPOND TO THE SCAN TOOL .
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 V: THE HVAC MODULE DOES NOT RESPOND TO THE SCAN TOOL .
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: THE GLOBAL POSITIONING SYSTEM MODULE (GPSM) DOES NOT RESPOND TO THE SCAN TOOL .
U0184 Lost Communication With Radio (ACM  ) FCIM 
FDIM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST M: THE AUDIO CONTROL MODULE (ACM) DOES NOT RESPOND TO THE SCAN TOOL .
U0184:00 Lost Communication With Radio: No Sub Type Information APIM 
Audio DSP  module
FCIM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST M: THE AUDIO CONTROL MODULE (ACM) DOES NOT RESPOND TO THE SCAN TOOL .
U0197 Lost Communication With Telephone Control Module ACM 
FDIM 		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST L: THE ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0197:00 Lost Communication With Telephone Control Module: No Sub Type Information ACM 
Audio DSP  module		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST L: THE ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0208:00 Lost Communication With "Seat Control Module A": No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST T: THE DRIVER SEAT MODULE (DSM) DOES NOT RESPOND TO THE SCAN TOOL .
U0214:00 Lost Communication With Remote Function Actuator: No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST K: THE REMOTE FUNCTION ACTUATOR (RFA) MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0232:00 Lost Communication With Side Obstacle Detection Control Module - Left: No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST R: THE SIDE OBSTACLE DETECTION CONTROL MODULE - LEFT (SOD-L) DOES NOT RESPOND TO THE SCAN TOOL .
U0233:00 Lost Communication With Side Obstacle Detection Control Module - Right: No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST S: THE SIDE OBSTACLE DETECTION CONTROL MODULE - RIGHT (SOD-R) DOES NOT RESPOND TO THE SCAN TOOL .
U0238 Lost Communication With Digital Audio Control Module "D" (DSP  ) FDIM  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST W: THE AUDIO DIGITAL SIGNAL PROCESSING (DSP) MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0238:00 Lost Communication With Digital Audio Control Module "D": No Sub Type Information ACM  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST W: THE AUDIO DIGITAL SIGNAL PROCESSING (DSP) MODULE DOES NOT RESPOND TO THE SCAN TOOL .
U0242:00 Lost Communication With Headlamp Control Module "B": No Sub Type Information IPC  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST Y: THE HEADLAMP CONTROL MODULE 2 (HCM-2) DOES NOT RESPOND TO THE SCAN TOOL .
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 L: THE ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0255 Lost Communication With Front Controls Interface Module ACM  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST N: THE FRONT CONTROLS INTERFACE MODULE (FCIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0255:00 Lost Communication With Front Display Interface Module: 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 O: THE FRONT DISPLAY INTERFACE MODULE (FDIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0256 Lost Communication With Front Display Interface Module ACM  CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST O: THE FRONT DISPLAY INTERFACE MODULE (FDIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0256:00 Lost Communication With Front Controls Interface Module "A": No Sub Type Information ACM 
APIM 
HVAC module		 CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, Go To PINPOINT TEST N: THE FRONT CONTROLS INTERFACE MODULE (FCIM) DOES NOT RESPOND TO THE SCAN TOOL .
U0401 Invalid Data Received from ECM  /PCM A 4X4 control module RETRIEVE and FOLLOW the DTCs from the PCM.
U0401:00 Invalid Data Received from ECM  /PCM A: No Sub Type Information OCSM 
PSCM 
RCM 		 RETRIEVE and FOLLOW the DTCs from the PCM.
U0401:68 Invalid Data Received from ECM  /PCM A: Event Information C-CM 
IPC 		 RETRIEVE and FOLLOW the DTCs from the PCM.
U0405 Invalid Data Received from Cruise Control Module ABS module RETRIEVE and FOLLOW the DTCs from the C-CM  .
U0405:55 Invalid Data Received from Cruise Control Module: Not Configured IPC  RETRIEVE and FOLLOW the DTCs from the C-CM  .
U0405:68 Invalid Data Received from Cruise Control Module: Event Information HUD  module RETRIEVE and FOLLOW the DTCs from the C-CM  .
U0415 Invalid Data Received From Anti-Lock Brake System (ABS) Control Module 4X4 control module RETRIEVE and FOLLOW the DTCs from the ABS module.
U0415:00 Invalid Data Received From Anti-Lock Brake System (ABS) Control Module: No Sub Type Information PSCM  RETRIEVE and FOLLOW the DTCs from the ABS module.
U0418:68 Invalid Data Received from Brake System Control Module: Event Information C-CM  RETRIEVE and FOLLOW the DTCs from the ABS module.
U0420 Invalid Data Received From Power Steering Control Module ABS module RETRIEVE and FOLLOW the DTCs from the PSCM  .
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information APIM 
GPSM 		 RETRIEVE and FOLLOW the DTCs from the SJB  .
U0422:55 Invalid Data Received From Body Control Module: Not Configured IPC  RETRIEVE and FOLLOW the DTCs from the SJB  .
U0422:68 Invalid Data Received From Body Control Module: Event Information HVAC module RETRIEVE and FOLLOW the DTCs from the SJB  .
U0423:00 Invalid Data Received From Instrument Panel Cluster Control Module: No Sub Type Information APIM 
GPSM 		 RETRIEVE and FOLLOW the DTCs from the IPC  .
U0423:68 Invalid Data Received From Instrument Panel Cluster Control Module: Event Information HUD  module
HVAC module
RFA  module		 RETRIEVE and FOLLOW the DTCs from the IPC  .
U0424:68 Invalid Data Received From HVAC Control Module: Event Information C-CM  RETRIEVE and FOLLOW the DTCs from the HVAC module.
U0430:68 Invalid Data Received From Tire Pressure Monitor Module: Event Information IPC  RETRIEVE and FOLLOW the DTCs from the SJB  .
U0452 Invalid Data Received from Restraints Control Module ABS module RETRIEVE and FOLLOW the DTCs from the RCM  .
U0459:68 Invalid Data Received from Head Up Display: Event Information C-CM  RETRIEVE and FOLLOW the DTCs from the HUD  module.
U045A:00 Invalid Data Received From Parking Assist Control Module "A": No Sub Type Information PSCM  RETRIEVE and FOLLOW the DTCs from the PAM  .
U045A:55 Invalid Data Received From Parking Assist Control Module "A": Not Configured IPC  RETRIEVE and FOLLOW the DTCs from the PAM  .
U045A:68 Invalid Data Received From Parking Assist Control Module "A": Event Information IPC  RETRIEVE and FOLLOW the DTCs from the PAM  .
U0462:68 Invalid Data Received From Compass Module: Event Information IPC  REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
U0464:68 Invalid Data Received From Navigation Control Module: Event Information HVAC module RETRIEVE and FOLLOW the DTCs from the ACM  .
U046B:00 Invalid Data Received From Global Positioning System Module: No Sub Type Information APIM  RETRIEVE and FOLLOW the DTCs from the GPSM  .
U0485:00 Invalid Data Received From Radio: No Sub Type Information APIM  RETRIEVE and FOLLOW the DTCs from the ACM  .
U049A:68 Invalid Data Received from "Door Control Module A": Event Information RFA  module RETRIEVE and FOLLOW the DTCs from the DDM  .
U0515:56 Invalid Data Received from RFA  Module IPC  IPC RETRIEVE and FOLLOW the DTCs from the RFA module.
U0554:00 Invalid Data Received from Accessory Protocol Interface Module: No Sub Type Information RCM  RETRIEVE and FOLLOW the DTCs from the APIM  .
U0557:68 Invalid Data Received From Front Controls Interface Module "A": Event Information HVAC module RETRIEVE and FOLLOW the DTCs from the FCIM  .
U2023 Fault Received From External Node ABS module The module had an invalid network input/message from another module. RETRIEVE and FOLLOW the non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES .
U2472 Unexpected Ignition State SJB  REFER to MULTIFUNCTION ELECTRONIC MODULES .
U2473 Unexpected Vehicle Speed (VSS  ) SJB  REFER to MULTIFUNCTION ELECTRONIC MODULES .
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. CLEAR the DTC. REPEAT the network test with the scan tool.
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