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Code B0013

Symptoms

• Airbag warning light on

• Knee bolster airbag may not deploy in a crash

• Possible error message on dashboard

Common Causes

• Faulty airbag control module

• Damaged wiring or connectors

• Defective knee bolster airbag sensor

Glossary

Airbag Control Module: A device that controls the deployment of airbags in a vehicle.

Knee Bolster: A part of the vehicle designed to protect the knees during a collision.

Related Codes

• B0012

• B0014

Laymans terms

This code means there's a problem with the part of the car that helps protect the passenger's knees during a crash.

Explanation

The B0013 code indicates an issue with the system that controls the deployment of the knee airbag on the passenger side.

Technical description

The B0013 code is triggered when there is a malfunction in the passenger knee bolster deployment control circuit. This system is responsible for deploying the knee airbag to protect the passenger's lower body in the event of a collision. The issue could be due to a faulty sensor, wiring problem, or a malfunctioning airbag control module.

Diagnosis steps

• Check for any other related airbag codes.

• Inspect the wiring and connectors for damage.

• Test the airbag control module and knee bolster sensor.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty knee bolster airbag sensor.

• Replace the airbag control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Malibu

• GMC Acadia

• Buick Enclave

Preventive measures

• Regularly inspect airbag system components.

• Ensure all vehicle recalls are addressed promptly.

• Avoid tampering with airbag system wiring.

Error code type

Safety System Issue

User experience recommendations

• Do not ignore the airbag warning light.

• Have the vehicle inspected by a professional if this code appears.

Warranty information

Airbag system components may be covered under a longer warranty period, check with the manufacturer.

Historical data

The B0013 code has been associated with various models from the early 2000s onward, often due to wiring issues or sensor failures.

Urgency level

High – This code affects the safety system of the vehicle and should be addressed immediately.

Legal and safety notice

Driving with a malfunctioning airbag system may be illegal and is certainly unsafe.

Testing conditions

• Vehicle must be stationary.

• Ignition in the 'On' position.

Component location

The passenger knee bolster airbag is located beneath the dashboard on the passenger side.

FAQs

Q: Can I still drive my car with the B0013 code?
A: It's not recommended to drive with this code active, as it affects the airbag system's ability to protect passengers in a crash.

Q: Will disconnecting the battery reset the B0013 code?
A: Disconnecting the battery might temporarily clear the code, but it won't fix the underlying issue.

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