B00C2: Passenger Seat Occupant Classification Sensor "C" (Subfault)

What it means

The restraint control module monitors passenger seat occupant classification sensor C as part of the seat classification system. It sets this code when it detects a fault in that sensor or its circuit; the title does not specify the failure mode.

At a glance

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

How it works

Passenger seat occupant classification sensor C is one input the classification system uses to assess whether the seat is empty or occupied and determine passenger-airbag status. B00C2 means the module has found a fault associated with sensor C or its circuit, without specifying whether the sensor, wiring, or another component is responsible.

Common causes

Most likely first.

1. Faulty passenger seat occupant classification sensor C
2. Damaged wiring or connector beneath the seat
3. Seat cushion or upholstery issue affecting sensor readings
4. Fault in the occupant classification or restraint control module

Symptoms

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

How to diagnose it

1. Read restraint and occupant-classification codes and freeze-frame data, then check live sensor C data and the passenger-airbag status display.
2. Remove items from the passenger seat and check around the cushion for anything that could interfere with sensor C.
3. Inspect the seat cushion and upholstery for damage or alteration, and check accessible sensor C wiring and connectors beneath the seat.
4. Use the manufacturer's occupancy-check procedure to see whether sensor C data changes plausibly between the required seat conditions.
5. Test sensor C and its wiring to the manufacturer's specification; investigate the classification or restraint module only if those checks pass.

Common fixes

• Remove an obstruction affecting passenger seat sensor C.
• Repair damaged wiring or secure a loose sensor C connector beneath the seat.
• Repair seat cushion or upholstery damage affecting the sensor according to the manufacturer's procedure.
• Replace sensor C or repair the classification or restraint module when testing confirms the failed component.

Can I keep driving?

Arrange prompt diagnosis because passenger-airbag status may not reflect seat occupancy correctly while this fault is present. Follow the vehicle's passenger and child-seat instructions, and do not disturb the seat wiring.