What it means
This code identifies a fault associated with the second row center seat belt load limiter deployment control. The restraint control module sets it when it detects a problem in that deployment control; the exact fault is specified by accompanying subfault information.
How it works
The restraint control module monitors the electrical deployment circuit for the second-row center seat belt load limiter. It stores B0084 when that circuit fails a self-check; the accompanying subfault information identifies the detected fault type.
Common causes
Most likely first.
- Load limiter wiring or connector fault
- Open or shorted deployment circuit
- Faulty second row center load limiter
- Restraint control module fault
Symptoms
- Airbag warning light on
- Second row center load limiter may not operate in a crash
How to diagnose it
- Read the restraint module's freeze-frame data and subfault details to identify when the second-row center circuit failed and what condition was recorded.
- With the SRS system made safe according to the vehicle manufacturer's procedure, inspect the center seat belt load limiter connector and its wiring for damage, looseness, corrosion, or pinched sections.
- Check for recent seat, trim, or interior repairs that may have disturbed the second-row center wiring.
- Use the manufacturer's diagnostic procedure to test the deployment circuit for an open or short; do not probe or apply power to an SRS circuit with ordinary test equipment.
- If wiring and connections pass the specified checks, test the second-row center load limiter and restraint control module as directed by the vehicle-specific procedure.
Common fixes
- Secure or repair a loose or damaged second-row center load limiter connector.
- Repair damaged wiring in the second-row center deployment circuit.
- Replace the second-row center load limiter if it fails the manufacturer's test.
- Repair or replace the restraint control module only if its checks confirm an internal fault.
Can I keep driving?
The vehicle may be drivable, but the second-row center load limiter may not work properly in a crash, and the SRS warning light indicates a restraint-system fault. Have the fault diagnosed promptly and avoid carrying a passenger in that seat until it is repaired.
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.