What it means
The restraint module monitors the deployment circuit for the second-row center inflatable seatbelt. It sets this code when the circuit’s measured electrical characteristics are outside the expected range.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The restraint control module monitors the deployment circuit for the second-row center inflatable seatbelt, which uses an inflator to widen the webbing in a crash. B00F3 is stored when the circuit’s electrical reading is outside the expected range, so this center belt may not deploy as intended.
Common causes
Most likely first.
- Open or short in inflatable belt deployment circuit
- Damaged wiring or connector
- Failed belt inflator
- 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
- Use a restraint-capable scan tool to verify B00F3 and note any related codes or stored event data before clearing them.
- Inspect the second-row center belt and surrounding seat or trim area for damage, moisture, or signs of recent repair.
- Following the vehicle maker’s disable procedure, check the center belt deployment connector and wiring for loose terminals, corrosion, damaged pins, or chafing.
- Test the second-row center deployment circuit for an open or short with the approved method; do not connect an ordinary meter or test light to the inflator.
- If the circuit is intact, use the manufacturer’s diagnostic procedure to determine whether the center belt inflator or restraint module is at fault.
Common fixes
- Secure the center belt connector or repair damaged wiring using the manufacturer’s specified repair method.
- Replace the faulty deployment connector or damaged harness section identified by checks.
- Replace the second-row center inflatable belt assembly if its inflator fails the approved test.
- Repair or replace the restraint control module only after confirming an internal module fault.
Can I keep driving?
The second-row center inflatable belt may not deploy in a crash, reducing protection for that seating position. Avoid using the seat until the fault is fixed, and do not handle the inflator except under the maker’s safety instructions.
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.