Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Ford Taurus Limited, FWDFACTORY OEM SERVICE PROCEDURE
Module Communications Network DTCS
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 | Control Module Communication Bus A Off | ABS module | DTC U0073 indicates 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 | Heating ventilation air conditioning (HVAC) module | DTC U0073 indicates 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 | Instrument cluster (IC) | DTC U0073 indicates the module could not communicate on the high speed controller area network (HS-CAN) 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 | Steering effort control module (SECM) | DTC U0073 indicates 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 | DTC U0074 indicates the module could not communicate on the medium speed controller area network (MS-CAN) 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 | IC | DTC U0074 indicates the module could not communicate on the MS-CAN 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 | ABS module | The fault is not currently present if the PCM communicates with the scan tool. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | IC | The fault is not currently present if the PCM communicates with the scan tool. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | Restraints control module (RCM) | The fault is not currently present if the PCM communicates with the scan tool. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | SECM | The fault is not currently present if the PCM communicates with the scan tool. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0100 | Lost Communication With ECM/PCM | 4X4 control module | The fault is not currently present if the PCM communicates with the scan tool. CLEAR the DTC. REPEAT the network test with the scan tool. |
| U0102 | Lost Communication With Transfer Case Control Module (4X4CM) | ABS module | Go to Pinpoint Test D . |
| U0114 | Lost Communication With Four-Wheel Drive Clutch Control Module | ABS module | Go to Pinpoint Test D . |
| U0114 | Lost Communication With Four-Wheel Drive Clutch Control Module | IC | Go to Pinpoint Test C . |
| U0121 | Lost Communication With 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. |
| U0121 | Lost Communication With ABS Control Module | IC | 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 ABS Control Module | SECM | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0126 | Lost Communication With Steering Angle Sensor Module | SECM | REFER to VEHICLE DYNAMIC SYSTEMS article. |
| U0140 | Lost Communication With Body Control Module (GEM) | Audio control module (ACM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0140 | Lost Communication With Body Control Module (GEM) | Rear entertainment module (RETM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0140 | Lost Communication With Body Control Module (GEM) | Driver seat module (DSM) | Go to Pinpoint Test H . |
| U0140 | Lost Communication With Body Control Module (GEM) | HVAC module | Go to Pinpoint Test H . |
| U0140 | Lost Communication With Body Control Module (GEM) | IC | Go to Pinpoint Test H . |
| U0140 | Lost Communication With Body Control Module (GEM) | Liftgate/trunk module (LTM) | Go to Pinpoint Test H . |
| U0151 | Lost Communication With Restraints Control Module | IC | Go to Pinpoint Test E . |
| U0151 | Lost Communication With Restraints Control Module | Occupant classification system module (OCSM) | Go to Pinpoint Test E . |
| U0154 | Lost Communication With Restraints Occupant Classification System Module (OCS) | RCM | Go to Pinpoint Test F . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | 4X4 control module | Go to Pinpoint Test C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | DSM | Go to Pinpoint Test C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | LTM | Go to Pinpoint Test C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | SJB | 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. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | SECM | 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 | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0164 | Lost Communication With HVAC Control Module (EATC) | IC | Go to Pinpoint Test N . |
| U0184 | Lost Communication With Radio (ACM) | Accessory protocol interface module (APIM) | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0184 | Lost Communication With Radio (ACM) | RETM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0184 | Lost Communication With Radio (ACM) | Satellite digital audio receiver system (SDARS) module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | RETM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module A | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module A | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0196 | Lost Communication With Entertainment Control Module A | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0197 | Lost Communication With Telephone Control Module | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0197 | Lost Communication With Telephone Control Module | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0208 | Lost Communication With Seat Control Module (DSM) | IC | Go to Pinpoint Test J . |
| U0212 | Lost Communication With Steering Column Control Module | SECM | REFER to VEHICLE DYNAMIC SYSTEMS article. |
| U0230 | Lost Communication With Rear Gate Module (LTM) | IC | Go to Pinpoint Test L . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0255 | Lost Communication With Front Controls Interface Module | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0255 | Lost Communication With Front Controls Interface Module | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0256 | Lost Communication With Front Display Interface Module | APIM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0256 | Lost Communication With Front Display Interface Module | SDARS module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U0401 | Invalid Data Received from ECM/PCM A | 4X4 control module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U0401 | Invalid Data Received from ECM/PCM A | SECM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U0415 | Invalid Data Received from ABS Control Module | 4X4 control module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U0415 | Invalid Data Received from ABS Control Module | SECM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2013 | Compass Module is Not Responding | IC | REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article. |
| U2023 | Fault Received From External Node | ABS module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2023 | Fault Received From External Node | IC | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2023 | Fault Received From External Node | RCM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2023 | Fault Received From External Node | SECM | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2196 | Invalid 'Engine RPM' Data | IC | RETRIEVE and FOLLOW non-network DTCs from the PCM. |
| U2199 | Invalid 'Engine Coolant Temperature' Data | IC | RETRIEVE and FOLLOW non-network DTCs from the PCM. |
| U2471 | Unexpected PRNDL State | LTM | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article. |
| U2472 | Unexpected Ignition State | IC | REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article. |
| U2472 | Unexpected Ignition State | LTM | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article. |
| U2472 | Unexpected Ignition State | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2473 | Unexpected Vehicle Speed (VSS) | ACM | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. |
| U2473 | Unexpected Vehicle Speed (VSS) | LTM | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article. |
| U2473 | Unexpected Vehicle Speed (VSS) | SJB | REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2510 | CAN - Invalid Data for Vehicle Security | IC | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| 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) article. |
| U261A | CAN Data / Configuration Setup Mismatch | IC | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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