DTC Charts
WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Network DTCs (U-codes) are often a result of intermittent concerns such as faulty 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
article.
NOTE:
DTC U1900 will set in a 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.
COMMUNICATION NETWORK DTC CHART
| 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. 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 Off | Heating ventilation air conditioning (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. |
| U0073 | Control Module Communication Bus Off | Smart junction box (SJB) | 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 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 | 4X4 control 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 | 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. |
| U0101 | Lost Communication With TCM | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| 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. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0140 | Lost Communication With Body Control Module (GEM) | Audio control module (ACM) | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0140 | Lost Communication With Body Control Module (GEM) | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0140 | Lost Communication With Body Control Module (GEM) | Parking aid module (PAM) | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Cluster Module | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Cluster Module | Audio digital signal processing (DSP) module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Cluster Module | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Cluster Module | PAM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Cluster Module | 4X4 control module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0184 | Lost Communication With Radio (ACM) | Accessory protocol interface module (APIM) | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0184 | Lost Communication With Radio (ACM) | DSP module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0184 | Lost Communication With Radio (ACM) | Satellite digital audio receiver system (SDARS) module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | ACM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | APIM | DISREGARD this DTC. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | ACM | DISREGARD this DTC. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | SDARS module | DISREGARD this DTC. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | DSP module | DISREGARD this DTC. |
| U0197 | Lost Communication With Telephone Control Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0197 | Lost Communication With Telephone Control Module | DSP module | DISREGARD this DTC. |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | DSP module | DISREGARD this DTC. |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0246 | Lost Communication With Seat Control Module (DCSM) | HVAC module | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | ACM | DISREGARD this DTC. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | APIM | DISREGARD this DTC. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | SDARS module | DISREGARD this DTC. |
| U0255 | Lost Communication With Front Controls Interface Module | APIM | DISREGARD this DTC. |
| U0255 | Lost Communication With Front Controls Interface Module | SDARS module | DISREGARD this DTC. |
| U0256 | Lost Communication With Front Display Interface Module | APIM | DISREGARD this DTC. |
| U0256 | Lost Communication With Front Display Interface Module | SDARS module | DISREGARD this DTC. |
| U0401 | Invalid Data Received from ECM/PCM A | 4X4 control module | RETRIEVE and FOLLOW the DTCs from the PCM. |
| U0402 | Invalid Data Received from TCM | 4X4 control module | RETRIEVE and FOLLOW the DTCs from the TCM. |
| U0415 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module | 4X4 control module | RETRIEVE and FOLLOW the DTCs from the ABS module. |
| U1900 | CAN Communication Bus Fault-Receive Error | ABS module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Driver seat module (DSM) | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | IC | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | RCM | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | SJB | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Occupant classification system module (OCSM) | Go to Symptom Chart . for module that failed network test. |
| U1901 | CAN #2 Communication Bus Fault - Receive Error | IC | 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 article. |
| U2013 | Compass Module is not Responding | IC | RETRIEVE and FOLLOW the non-network DTCs from other modules. REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article. |
| 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 article. |
| U2023 | Fault Received From External Node | IC | 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 article. |
| U2510 | CAN - Invalid data for Vehicle Security | IC | The module had an invalid network input/message from another module. RETRIEVE and FOLLOW the non-network DTCs from other modules. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| U2511 | CAN - Data Mis-Match (Receive data does not match expected) | IC | The module had an invalid network input/message from another module. RETRIEVE and FOLLOW the non-network DTCs from other modules. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |