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 .
B1317	Battery Voltage High	GO to PINPOINT TEST F .
B1318	Battery Voltage Low	GO to PINPOINT TEST F .
B1342	ECU is Faulted	INSTALL a new Occupant Classification System (OCS) service kit. REFER to OCCUPANT CLASSIFICATION SENSOR .
B2290	Occupant Classification System Fault	GO to PINPOINT TEST AI .
B2909	Belt Tension Sensor Fault	GO to PINPOINT TEST AS .
C1941	Zero Seat Weight Test Failure	Can only be reported when carrying out System Reset. GO to PINPOINT TEST AI .
U0151	Lost Communication with Restraints Control Module (RCM)	NOTE: The DTC will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new OCSM as part of repair. REFER to MODULE COMMUNICATIONS NETWORK to diagnose the communication concern.
U2050	No Application Present	INSTALL a new OCS service kit. REFER to OCCUPANT CLASSIFICATION SENSOR .
U2051	One or More Calibration Files Missing/Corrupt	INSTALL a new OCS service kit. REFER to OCCUPANT CLASSIFICATION SENSOR .

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.

Safety Warning

Occupant Classification System Module (OCSM)