B00C3: Passenger Seat Occupant Classification Sensor "D" (Subfault)

What it means

The restraint module monitors passenger-seat occupant classification sensor D as part of its assessment of seat occupancy. It sets this code when the sensor’s signal or circuit does not meet the module’s expected criteria.

At a glance

• Usually lights the airbag (SRS) or body-system warning light

How it works

Passenger seat occupant classification sensor D provides an input used to assess seat occupancy and manage passenger-airbag status. B00C3 sets when the restraint module finds sensor D's signal or circuit outside its expected criteria; the code does not identify a specific electrical failure.

Common causes

Most likely first.

1. Failed occupant classification sensor
2. Loose or damaged connector or wiring
3. Open or short in the sensor circuit
4. Fault in the restraint control module

Symptoms

• Warning light or symbol related to the affected system
• Comfort or safety function impaired

How to diagnose it

1. Scan the restraint and occupant-classification modules, record freeze-frame data, and check sensor D's live status and the passenger-airbag indicator.
2. Remove loose objects from the passenger seat and check for trapped items near the cushion that could affect sensor D.
3. Inspect the cushion and upholstery for damage or changes, then examine accessible sensor D wiring and connectors beneath the seat for opens, shorts, or poor connections.
4. Follow the manufacturer's occupancy-check procedure and observe whether sensor D data responds plausibly to the required seat conditions.
5. Test the sensor D circuit and sensor against the manufacturer's specification, then assess the restraint module only after wiring and sensor tests pass.

Common fixes

• Remove objects or obstructions affecting sensor D.
• Repair an open, short, damaged wire, or poor connector in sensor D's circuit.
• Repair cushion or upholstery damage affecting sensor D using the manufacturer's procedure.
• Replace sensor D or repair the restraint control module if testing isolates the fault to that component.

Can I keep driving?

Have the fault diagnosed promptly because the passenger seat may be classified incorrectly and airbag status may be affected. Until repaired, follow the vehicle's guidance for front-seat passengers and child restraints.