What it means
Fault on the occupant position system that detects forward/rearward position of occupants, used by the airbag controller to scale deployment force.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The occupant position system detects an occupant's position for use by the restraint controller when managing airbag deployment. B00A1 reports a subfault in that system, without identifying which position sensor or circuit is responsible.
Common causes
Most likely first.
- Fault in an occupant position sensor or its wiring
- Loose or damaged sensor connector
- Obstruction or damage affecting sensor readings
- 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
- Read all restraint-module codes and freeze-frame details with a scan tool that supports occupant-position data.
- Check whether the code is current or returns after a restart, and note any related position-sensor or restraint codes.
- Inspect the relevant occupant-position sensing area for obstruction, visible damage, or anything that could prevent the sensor from reading correctly.
- With the system safely powered down per the manufacturer's procedure, inspect the sensor connectors and wiring for looseness, corrosion, or physical damage.
- Compare available position readings and test the sensor circuits using the manufacturer's diagnostic steps and specifications.
- If the sensors and wiring pass, check the restraint control module and its connections using the correct vehicle-specific procedure.
Common fixes
- Remove an obstruction affecting the occupant-position sensor's sensing area.
- Reconnect and secure a loose sensor connector.
- Repair damaged wiring or terminals in the occupant-position circuit.
- Replace a sensor confirmed faulty by testing.
- Repair or replace the restraint control module if diagnostics confirm an internal fault.
Can I keep driving?
A restraint-system fault may affect how airbags respond to occupant position in a crash. Drive only as needed to arrange prompt diagnosis, and do not treat the airbag warning as cosmetic.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.