DTC Charts
NOTE:
Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle service procedures such as module reprogramming will often set network DTCs. Replacing a module to resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to
BATTERY, MOUNTING AND CABLES
.
NOTE:
This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.
COMMUNICATION NETWORK DTC CHART
| 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. |
| U0001:88 | High Speed CAN Communication Bus: Bus Off | ABS module DC/DCHCMPSCM | 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 | 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 | 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 | OCSMRCM | 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 | 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. |
| U0074:00 | Control Module Communication Bus B Off: No Sub Type Information | BECM | Refer to IDENTIFICATION CODES . |
| U0100 | Lost Communication With ECM/PCM | 4X4 control module ABS module 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 | ABS module ACCMAPIMBECMDC/DCIPCPSCMRCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test A . |
| U0100:87 | Lost Communication With ECM/PCM "A": Missing Message | HCMOCSM TCM (Hybrid) |
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 | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test G . |
| U0101:00 | Lost Communication With TCM: No Sub Type Information | BECMDC/DCIPC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test G . |
| U0101:87 | Lost Communication With TCM: Missing Message | HCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test G . |
| 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 . |
| U010F:00 | Lost Communication With Air Conditioning Control Module: No Sub Type Information | IPC (Hybrid) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test K . |
| U0111:00 | Lost Communication With Battery Energy Control Module "A": No Sub Type Information | IPC (Hybrid) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test J . |
| U0111:87 | Lost Communication With Battery Energy Control Module "A": Missing Message | TCM (Hybrid) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test J . |
| 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 H . |
| U0114:00 | Lost Communication With Four-Wheel Drive Clutch Control Module: No Sub Type Information | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test H . |
| 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 . |
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | IPCPSCMRCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test B . |
| U0121:87 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: Missing Message | HCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test B . |
| U0126:87 | Lost Communication With Steering Angle Sensor Module: Missing Message | HCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test D . |
| U0129:87 | Lost Communication With Brake System Control Module: Missing Message | TCM (Hybrid) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test B . |
| 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 . |
| U0131:87 | Lost Communication With Power Steering Control Module: Missing Message | ABS module | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test D . |
| U0140 | Lost Communication With Body Control Module (GEM) | ABS module ACMDDMDSMFCIMFDIMPAMILCM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test U . |
| U0140:00 | Lost Communication With Body Control Module (GEM): No Sub Type Information | ACMAPIM Audio DSP module FCIMGPSM HVAC module IPC |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test U . |
| U0151:00 | Lost Communication With Restraints Control Module: No Sub Type Information | APIMBECMIPC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test E . |
| U0151:87 | Lost Communication With Restraints Control Module: Missing Message | ABS module OCSM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test E . |
| U0151:88 | Lost Communication With Restraints Control Module: Bus 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. |
| U0154:00 | Lost Communication With Restraints Occupant Classification System 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 F . |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Module | 4X4 control module ABS module ACMDSMFDIMGPSMPAMSJB |
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 | ACCMACMAPIM Audio DSP module BECMDC/DC HVAC module RCM |
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 | ABS module HCM | 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 T . |
| U0159:00 | Lost Communication With Parking Assist Control Module (PAM): No Sub Type Information | ACMIPC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test T . |
| 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 | IPC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test N . |
| U0164 | Lost Communication With HVAC Control Module | FCIMFDIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test V . |
| U0164:00 | Lost Communication With HVAC Control Module: No Sub Type Information | ACMIPC | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test V . |
| 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) | FCIMFDIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test M . |
| U0184:00 | Lost Communication With Radio: No Sub Type Information | APIM Audio DSP module FCIMIPC |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test M . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | ACMFDIM | 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) | ACMFDIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196:00 | Lost Communication With Entertainment Control Module - Rear "A": No Sub Type Information | ACM Audio DSP module |
REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | Lost Communication With Telephone Control Module | ACMFDIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test AA . |
| 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 AA . |
| 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 Z . |
| 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 . |
| 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 . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | ACMFDIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test W . |
| U0238:00 | Lost Communication With Digital Audio Control Module "D" (DSP): 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 . |
| U0241:00 | Lost Communication With Headlamp 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 I . |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | ACMFDIM | 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 . |
| 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 AA . |
| 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 . |
| U0255:00 | Lost Communication With Front Display Interface Module: No Sub Type Information | ACMAPIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test O . |
| 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 . |
| U0256:00 | Lost Communication With Front Controls Interface Module: No Sub Type Information | ACMAPIM | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test N . |
| U0294:87 | Lost Communication With Powertrain Control Monitor Module: Missing Message | TCM (Hybrid) | CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test A . |
| U0298:00 | Lost Communication With DC to DC Converter Control Module "A": No Sub Type Information | BECM IPC (Hybrid) |
CLEAR the DTC. REPEAT the network test with the scan tool. If the DTC returns, GO to Pinpoint Test L . |
| U029A:00 | Lost Communication With Hybrid Battery Pack Sensor Module: No Sub Type Information | BECM | REFER to HIGH VOLTAGE TRACTION BATTERY . |
| U0401 | Invalid Data Received from ECM/PCM A | 4X4 control module ABS module |
RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0401:00 | Invalid Data Received from ECM/PCM "A": No Sub Type Information | ABS module PSCMRCM | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0401:66 | Invalid Data Received from ECM/PCM "A": Signal Has Too Many Transitions/Events | BECM | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0401:68 | Invalid Data Received from ECM/PCM "A": Event Information | ACCMBECMDC/DCIPC | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0401:86 | Invalid Data Received from ECM/PCM "A": Signal Invalid | HCM | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0402 | Invalid Data Received from TCM | ABS module | RETRIEVE and FOLLOW the DTCs from the TCM. |
| U0402:68 | Invalid Data Received fromTCM: Event Information | BECMIPC | RETRIEVE and FOLLOW the DTCs from the TCM. |
| U0402:86 | Invalid Data Received fromTCM: Signal Invalid | HCM | RETRIEVE and FOLLOW the DTCs from the TCM. |
| U040A:68 | Invalid Data Received from Air Conditioning Control Module: Event Information | IPC | RETRIEVE and FOLLOW the DTCs from the ACCM. |
| U0412:68 | Invalid Data Received from Battery Energy Control Module A: Event Information | IPC (Hybrid) | RETRIEVE and FOLLOW the DTCs from the BECM. |
| U0412:81 | Invalid Data Received from Battery Energy Control Module A: Invalid Serial Data Received | TCM (Hybrid) | RETRIEVE and FOLLOW the DTCs from the BECM. |
| U0414 | Invalid Data Received From Four-Wheel Drive Clutch Control Module | ABS module | RETRIEVE and FOLLOW the DTCs from the 4X4 control module. |
| 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. |
| U0415:68 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module: Event Information | IPC | RETRIEVE and FOLLOW the DTCs from the ABS module. |
| U0415:86 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module: Signal Invalid | HCM | RETRIEVE and FOLLOW the DTCs from the ABS module. |
| U0420:87 | Invalid Data Received From Power Steering Control Module: Missing Message | ABS module | RETRIEVE and FOLLOW the DTCs from the PSCM. |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | GPSM | RETRIEVE and FOLLOW the DTCs from the SJB. |
| U0422:68 | Invalid Data Received From Body Control Module: Event Information | HVAC module IPC | RETRIEVE and FOLLOW the DTCs from the SJB. |
| U0423:00 | Invalid Data Received From Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | APIMGPSM | RETRIEVE and FOLLOW the DTCs from the IPC. |
| U0423:64 | Invalid Data Received From Instrument Panel Cluster (IPC) Control Module: Signal Plausibility Failure | ABS module | RETRIEVE and FOLLOW the DTCs from the IPC. |
| U0423:68 | Invalid Data Received From Instrument Panel Cluster (IPC) Control Module: Event Information | ACCM HVAC module |
RETRIEVE and FOLLOW the DTCs from the IPC. |
| U0423:86 | Invalid Data Received From Instrument Panel Cluster (IPC) Control Module: Signal Invalid | HCM | RETRIEVE and FOLLOW the DTCs from the IPC. |
| U0424:68 | Invalid Data Received From HVAC Control Module: Event Information | BECM | RETRIEVE and FOLLOW the DTCs from the HVAC module. |
| U0428:86 | Invalid Data Received From Steering Angle Sensor Module: Signal Invalid | HCM | RETRIEVE and FOLLOW the DTCs from the PSCM. |
| U0430:68 | Invalid Data Received From Tire Pressure Monitor Module: Event Information | HVAC module | RETRIEVE and FOLLOW the DTCs from the SJB. |
| U0442:86 | Invalid Data Received From ECM/PCM "B": Signal Invalid | OCSM | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0452:00 | Invalid Data Received from Restraints Control Module A: No Sub Type Information | BECM | RETRIEVE and FOLLOW the DTCs from the RCM. |
| U0452:29 | Invalid Data Received from Restraints Control Module A: Signal Invalid | ABS module | RETRIEVE and FOLLOW the DTCs from the RCM. |
| U0452:68 | Invalid Data Received from Restraints Control Module A: Event Information | IPC | RETRIEVE and FOLLOW the DTCs from the RCM. |
| U0452:86 | Invalid Data Received From Restraints Control Module A: Signal Invalid | OCSM | RETRIEVE and FOLLOW the DTCs from the RCM. |
| U0462:00 | Invalid Data Received From Compass Module: No Sub Type Information | IPC | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U0462:68 | Invalid Data Received From Compass Module: Event Information | IPC | REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| 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. |
| U0533:68 | Invalid Data Received from Side Obstacle Detection Control Module - Left: Event Information | IPC | RETRIEVE and FOLLOW the DTCs from the SOD-L. |
| U0534:68 | Invalid Data Received from Side Obstacle Detection Control Module - Right: Event Information | IPC | RETRIEVE and FOLLOW the DTCs from the SOD-R. |
| U0599:68 | Invalid Data Received from DC to DC Converter Control Module "A": Event Information | BECM IPC (Hybrid) |
RETRIEVE and FOLLOW the DTCs from the DC/DC. |
| U1900 | CAN Communication Bus Fault-Receive Error | ABS module | GO to Symptom Chart for module that failed network test. |
| 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 | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES . |