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Code B0087

Symptoms

• Airbag warning light illuminated

• Seat belt warning light on

• Seat belt may not function properly in a collision

Common Causes

• Faulty seat belt load limiter

• Damaged wiring or connectors in the seat belt system

• Malfunctioning control module

Glossary

Load Limiter: A device in the seat belt system that controls the force exerted on the occupant during a crash.

Control Module: An electronic component that manages the operation of vehicle systems.

Related Codes

• B0088

• B0089

Laymans terms

This code means there might be a problem with the safety system that controls how tight the seat belt gets in the middle seat of the third row in a car.

Explanation

The B0087 code indicates an issue with the control system responsible for managing the load limiter of the third-row center seat belt. This system helps control the force applied by the seat belt during a crash.

Technical description

The B0087 code is triggered when the control module detects a malfunction in the deployment control circuit of the third-row center seat belt load limiter. The load limiter is a device that allows the seat belt to extend slightly during a collision, reducing the force on the occupant's body.

Diagnosis steps

• Inspect the seat belt and load limiter for physical damage.

• Check the wiring and connectors for signs of wear or damage.

• Use a diagnostic scanner to read and clear the code, then test the system.

Repair procedures

• Replace the faulty seat belt load limiter.

• Repair or replace damaged wiring or connectors.

• Replace the control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Suburban

• GMC Yukon XL

• Ford Expedition

Preventive measures

• Regularly inspect seat belts for wear and damage.

• Ensure all safety recalls are addressed promptly.

• Avoid placing heavy objects on seat belts.

Error code type

Safety System Issue

User experience recommendations

• Have the vehicle inspected by a professional as soon as possible.

• Do not attempt to repair safety systems without proper knowledge.

• Avoid using the affected seat if possible until repaired.

Warranty information

Check with the vehicle manufacturer for warranty coverage on safety systems.

Historical data

This code is relatively uncommon and typically appears in vehicles with advanced safety systems.

Urgency level

High – Safety systems are critical for occupant protection.

Legal and safety notice

Driving with a malfunctioning seat belt system can be dangerous and may violate safety regulations.

Testing conditions

• Vehicle stationary

• Ignition on

Component location

The third-row center seat belt load limiter is located within the seat belt assembly in the third row of the vehicle.

FAQs

Q: Can I drive with the B0087 code?
A: It's not recommended to drive with a malfunctioning seat belt system, as it may not protect you properly in a crash.

Q: How do I reset the B0087 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.

Last updated: Jun 9, 2026 • Source: internal database
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