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Code B0085

Quick reference

B0085 at a glance

Plain-language meaning
This code means there's a problem with the seat belt system in the back seat on the right side of the car. It's not working properly to protect you in case of an accident.
Urgency
High – This is a safety-related issue that should be addressed as soon as possible.
Difficulty
Moderate
System
Safety System Issue
Tools mentioned
OBD-II scanner, Multimeter, Screwdriver set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the seat belt system in the back seat on the right side of the car. It's not working properly to protect you in case of an accident.

Explanation

The code B0085 indicates that there is an issue with the load limiter deployment control for the second row right seat belt. This system is designed to control how much force is applied by the seat belt during a crash.

Technical description

The B0085 code is set when the airbag control module detects a fault in the circuit that controls the deployment of the load limiter for the second row right seat belt. The load limiter is a safety feature that reduces the force exerted by the seat belt on the occupant during a crash, preventing injury.

Symptoms

• Airbag warning light on

• Seat belt system malfunction message

• Seat belt not retracting or locking properly

Common Causes

• Faulty seat belt load limiter

• Damaged wiring or connectors

• Malfunctioning airbag control module

Glossary

Load Limiter: A device in a seat belt system that reduces the force applied to the occupant during a crash.

Airbag Control Module: A component that controls the deployment of airbags and related systems in a vehicle.

Diagnosis steps

• Check for any visible damage to the seat belt and wiring.

• Use a diagnostic scanner to read and clear the code.

• Inspect the airbag control module and related circuits.

Repair procedures

• Replace the faulty seat belt load limiter.

• Repair or replace damaged wiring or connectors.

• Replace the airbag control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Tahoe

• GMC Yukon

• Cadillac Escalade

Preventive measures

• Regularly inspect seat belts for wear and tear.

• Ensure all safety recalls are addressed promptly.

• Avoid using seat belts as storage hooks for heavy items.

Error code type

Safety System Issue

User experience recommendations

• Do not ignore the airbag warning light.

• Have the seat belt system inspected by a professional.

• Avoid using the affected seat until repaired.

Warranty information

Check with your vehicle manufacturer; seat belt systems may be covered under a longer warranty period.

Historical data

This code has been more common in vehicles with higher mileage or those involved in minor collisions.

Urgency level

High – This is a safety-related issue that should be addressed as soon as possible.

Testing conditions

• Vehicle stationary

• Ignition in the 'On' position

Component location

The second row right seat belt load limiter is located within the seat belt assembly on the right side of the second row of seats.

FAQs

Q: What is a seat belt load limiter?
A: A seat belt load limiter is a device that reduces the force exerted by the seat belt on the occupant during a crash, helping to prevent injury.

Q: Can I drive with this code present?
A: It's not recommended to drive with this code active, as it indicates a potential safety issue with the seat belt system.

Optional diagnostic gear

Tools that may help diagnose B0085

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Body and airbag faults often need a scanner that can access more than generic powertrain codes.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking power, ground, and continuity in body-system circuits.

View on Amazon
Bussmann Fuse Assortment diagnostic tool illustration

Universal · Fuse kit

Bussmann Fuse Assortment

Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.

Useful when body electrical faults trace back to blown fuses or shared circuits.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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