AutoCodes – Generic – B001B

B001B Code - Passenger Seat Belt Anchor Pretensioner Deployment Loop

Quick Answer

The seat belt pretensioner (driver and passenger) consists of a housing, seat belt retractor (located in the B-pillar), seat belt anchor (located in the seat), seat belt webbing, an initiator, and a canister of gas-generating materials. Common causes include Faulty Passenger Seat Belt Anchor Pretensioner, Passenger Seat Belt Anchor Pretensioner harness is open or shorted, Passenger Seat Belt Anchor Pretensioner circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B001B indicates Passenger Seat Belt Anchor Pretensioner Deployment Loop.
Common causes: Common causes include Faulty Passenger Seat Belt Anchor Pretensioner, Passenger Seat Belt Anchor Pretensioner harness is open or shorted, Passenger Seat Belt Anchor Pretensioner circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 14,871

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B001B Description

The seat belt pretensioner (driver and passenger) consists of a housing, seat belt retractor (located in the B-pillar), seat belt anchor (located in the seat), seat belt webbing, an initiator, and a canister of gas-generating materials. The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the Inflatable Restraint Sensing and Diagnostic Module (SDM) causes current to flow through the seat belt deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas. The gas produced from this reaction deploys the seat belt pretensioners which removes all of the slack in the seat belts. Depending on the severity of the collision, the seat belt pretensioners may deploy without the frontal air bags deploying, or they will deploy immediately before the frontal air bags deploy. A shorting bar (if equipped) is located in the connector.

OBDII Code B001B - Passenger Seat Belt Anchor Pretensioner Deployment Loop - AutoCodes.com — B001B Code - Passenger Seat Belt Anchor Pretensioner Deployment Loop

What does this mean?

What are the Possible Causes of the DTC B001B?

Faulty Passenger Seat Belt Anchor Pretensioner
Passenger Seat Belt Anchor Pretensioner harness is open or shorted
Passenger Seat Belt Anchor Pretensioner circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B001B?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

B001B:01 Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Battery
B001B:02 Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Ground
B001B:04 Passenger Seat Belt Anchor Pretensioner Deployment Loop Open
B001B:0D Passenger Seat Belt Anchor Pretensioner Deployment Loop High Resistance
B001B:0E Passenger Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B001B code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B001B code?

Need more information on how to fix the B001B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B001B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B001B Buick — Passenger Seat Belt Anchor Pretensioner Deployment Loop
B001B Cadillac — Passenger Seat Belt Anchor Pretensioner Deployment Loop
B001B Chevrolet — Passenger Seat Belt Anchor Pretensioner Deployment Loop
B001B GMC — Passenger Seat Belt Anchor Pretensioner Deployment Loop

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B001B Code

1. What does OBDII code B001B indicate?

The code B001B signifies a fault with the Passenger Seat Belt Anchor Pretensioner Deployment Loop.

2. What are the common symptoms of a B001B code?

Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger seat belt pretensioner system.

3. What can cause the B001B code to trigger?

The B001B code may be triggered by a malfunction in the passenger seat belt pretensioner deployment loop, such as a faulty wiring connection or a damaged pretensioner unit.

4. How serious is a B001B fault?

A B001B fault should be addressed promptly as it relates to the passenger seat belt pretensioner system, which is crucial for occupant safety in the event of a collision.

5. How can I diagnose a B001B code?

Diagnosing a B001B code typically involves using an OBDII scanner to read the code and then inspecting the passenger seat belt pretensioner system for any visible damage or wiring issues.

6. Can I repair a B001B code myself?

Repairing a B001B code may require specialized knowledge and tools, so it is recommended to have a qualified mechanic diagnose and repair the issue to ensure proper functioning of the safety system.

7. How much does it cost to fix a B001B code?

The cost of fixing a B001B code can vary depending on the underlying cause of the issue, but it may involve replacing the passenger seat belt pretensioner unit or repairing the wiring, which can range from a few hundred to a few thousand dollars.

8. Are there any safety concerns associated with a B001B code?

Yes, a B001B code indicates a potential issue with the passenger seat belt pretensioner system, which could impact its effectiveness in restraining the occupant in the event of a collision.

9. Can driving with a B001B code pose risks?

Driving with a B001B code is not recommended as it could compromise the functionality of the passenger seat belt pretensioner system, potentially increasing the risk of injury in a crash.

10. How often does the B001B code occur in vehicles?

The frequency of encountering a B001B code can vary depending on the vehicle's make and model, but issues with seat belt pretensioner systems are not uncommon in modern vehicles equipped with advanced safety features.