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.
2007 Ford Mustang Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Module Communications Network
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0073 | Control Module Communication Bus Off | Anti-lock brake system (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 Off | Instrument cluster | 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 Off | Smart junction box (SJB) | 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. |
| U0140 | Lost Communication With Body Control Module (GEM) | Audio control module | CLEAR the DTC. If the SJB failed the network test, go to Pinpoint Test D . Otherwise, DISREGARD the DTC. |
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | Audio control module | If the instrument cluster failed the network test, go to Pinpoint Test C . Otherwise, REFER to INSTRUMENT CLUSTER . |
| U0159 | Lost Communication With Parking Assist Control Module (PAM) | Audio control module | DISREGARD this DTC. |
| U0184 | Lost Communication With Radio | Satellite digital audio receiver system (SDARS) | If the audio unit fails the network test, go to Pinpoint Test E . Otherwise, REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0193 | Lost Communication With Digital Audio Control Module (SDARS) | Audio control module | If the SDARS fails the network test, go to Pinpoint Test F . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | Audio control module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | SDARS | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | Lost Communication With Telephone Control Module | Audio control module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0197 | Lost Communication With Telephone Control Module | SDARS | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0238 | Lost Communication With Digital Audio Control Module "D" | Audio control module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" | Audio control module | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" | SDARS | REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . |
| 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 | Audio unit | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault-Receive Error | Instrument cluster | 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. |
| U2011 | Module Transmitted Invalid Data (Non SCP) | ABS module | RETRIEVE AND FOLLOW non-network DTCs from module with non-network fault code present. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2023 | Fault Received From External Node | Instrument cluster | RETRIEVE AND FOLLOW non-network DTCs from module with non-network fault code present. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
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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