Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the safety feature that controls how the seat belt in the third row on the left side works during a crash.
The code B0086 indicates an issue with the deployment control of the load limiter for the third row left seat belt, which is a safety feature designed to reduce the force on the occupant during a collision.
The B0086 code is triggered when the airbag control module detects a malfunction in the load limiter deployment control circuit for the third row left seat belt. The load limiter is part of the seat belt system that allows some of the webbing to spool out in a controlled manner during a severe crash, reducing the force on the occupant's chest.
• Airbag warning light on
• Seat belt pretensioner may not function properly
• Potential reduced effectiveness of seat belt during a crash
• Faulty seat belt load limiter
• Damaged wiring or connectors
• Faulty airbag control module
Load Limiter: A device in the seat belt system that allows controlled release of webbing to reduce force on the occupant.
Airbag Control Module: A computer that controls the deployment of airbags and related safety systems.
• Perform a visual inspection of the seat belt and its components.
• Check for any damaged wires or connectors in the seat belt system.
• Use a diagnostic scanner to read and clear the code, then retest.
• Replace the faulty seat belt load limiter.
• Repair or replace any damaged wiring or connectors.
• Replace the airbag control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Suburban
• GMC Yukon XL
• Cadillac Escalade ESV
• Regularly inspect seat belts for wear and tear.
• Ensure that the seat belts retract smoothly.
• Avoid exposing seat belt components to moisture.
Safety System Issue
• Do not ignore the airbag warning light; have the system checked promptly.
• Ensure all passengers are wearing seat belts properly.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle manufacturer as seat belt components may be covered under a longer warranty period due to safety regulations.
This code has been associated with vehicles that have experienced issues with seat belt load limiters, particularly in larger SUVs with third-row seating.
High – Seat belt issues can compromise passenger safety in the event of a collision.
Driving with a malfunctioning seat belt system may not only be unsafe but could also be illegal depending on local regulations.
• Vehicle must be stationary.
• Ensure all electrical systems are functional.
The load limiter for the third row left seat belt is typically located within the seat belt retractor mechanism on the left side of the third row seating area.
Q: Can I drive with the B0086 code?
A: It's not recommended to drive with this code active, as it indicates a safety system malfunction.
Q: Will fixing this code require seat belt replacement?
A: Not necessarily. It could be a wiring issue or a problem with the control module, but a faulty seat belt load limiter may need replacement.
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