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.
2011 Ford Mustang Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Communication Network
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| U0028:08 | Vehicle Communication Bus A: Bus Signal/Message Failure | DTC U0028:08 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. |
| U0028:88 | Vehicle Communication Bus A: Bus off | DTC U0028:88 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 | 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. |
| U2472 | Unexpected Ignition State | This DTC is only set when an on-demand self-test is run with the test entry conditions not correct. CLEAR the DTC. REPEAT the self-test with the ignition in the ON position and the vehicle stationary. |
| U2473 | Unexpected Vehicle Speed | This DTC is only set when an on-demand self-test is run with the test entry conditions not correct. CLEAR the DTC. REPEAT the self-test with the ignition in the ON position and the vehicle stationary. |
| All network DTCs referenced to Symptom Chart | Go to SYMPTOM CHART | |
| All other DTCs | Refer to MULTIFUNCTION ELECTRONIC MODULE 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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