What it means
This code identifies a fault associated with the second-row left seatbelt pretensioner B deployment control. The failure type byte specifies the detected fault.
How it works
The second-row left seatbelt pretensioner B is an SRS component intended to tighten that seating position's belt in a crash. The restraints control module monitors the pretensioner B deployment circuit and stores this code when it detects a fault; accompanying subfault information specifies the detected failure type.
Common causes
Most likely first.
- Pretensioner circuit wiring or connector fault
- Open or short in the deployment circuit
- Faulty pretensioner
- Restraints control module fault
Symptoms
- Airbag or SRS warning light
- Pretensioner may not operate as intended in a crash
How to diagnose it
- Read the SRS subfault details and freeze-frame data to see what circuit condition was detected and when.
- Inspect the second-row left belt pretensioner, its connectors, and nearby harness for damage, corrosion, looseness, or trapping under trim or seats.
- Check for related SRS codes that could implicate shared module power, ground, or connections.
- Following the manufacturer's SRS safety procedure, test the second-row left pretensioner B circuit for an open or short matching the subfault.
- If wiring checks pass, test the pretensioner B and restraints control module with the manufacturer's diagnostic procedure.
Common fixes
- Reconnect or repair a loose or corroded second-row left pretensioner B connector.
- Repair damaged or pinched wiring in the second-row left pretensioner B circuit.
- Replace the second-row left pretensioner B assembly if it fails the specified checks.
- Repair or replace the restraints control module only if diagnosis confirms a module fault.
Can I keep driving?
The vehicle may be driveable, but the second-row left belt pretensioner may not function as intended in a crash. Use the belt correctly and have the SRS fault diagnosed promptly; avoid handling deployment-circuit wiring except under the manufacturer's safety procedure.
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.