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
Occupant Classification System Module (OCSM)
OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action To Take |
|---|---|---|
| B1231 | Event Threshold Exceeded (Crash Data Memory Full) | INSPECT the passenger seat for damage. REFER to INSPECTION AND REPAIR AFTER A SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPLOYMENT in this service information. |
| B1317 | Battery Voltage High | GO to PINPOINT TEST R . |
| B1318 | Battery Voltage Low | GO to PINPOINT TEST R . |
| B1342 | ECU is Faulted | INSTALL an Occupant Classification System (OCS) system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this service information. |
| B2290 | Occupant Classification System Fault | GO to PINPOINT TEST W . |
| B2909 | Belt Tension Sensor (BTS) Fault | GO to PINPOINT TEST X . |
| C1941 | Zero Seat Weight Test Failure | Can only be reported when carrying out System Reset. GO to PINPOINT TEST W . |
| U0151 | Lost Communication with Restraints Control Module (RCM) | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication concern. |
| U2050 | No Application Present | INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this service information. |
| U2051 | One or More Calibration Files Missing/Corrupt | INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this service information. |
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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