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.
2012 Ford Mustang Base, 2D Convertible, Automatic TransFACTORY OEM SERVICE PROCEDURE
External Control DTCS
DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Component | Description | Condition | Symptom | Action |
|---|---|---|---|---|---|
| B2572 | Brake Shift Interlock Actuator (BSIA) | BSIA output circuit failure | The associated circuitry connected to the Smart Junction Box (SJB) or fuse, or the SJB itself may have an issue causing a BSIA concern. | BSIA is inoperative or does not operate correctly. | GO to PINPOINT TEST A . |
| P1780 | Transmission Control Switch (TCS) | TCS (O/D cancel) circuit out of self test range | The PCM did not receive a TCS input during the Key ON Engine Running (KOER) self test. | The TCS is inoperative or does not operate correctly. | GO to PINPOINT TEST C . |
Factory Service Tools
Use the Manual With the Right Hardware
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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.