AutoCodes – Generic – B001A:01

B001A:01 Code - Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

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 Driver Seat Belt Anchor Pretensioner, Driver Seat Belt Anchor Pretensioner harness is open or shorted, Driver 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: B001A:01 indicates Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery.
Common causes: Common causes include Faulty Driver Seat Belt Anchor Pretensioner, Driver Seat Belt Anchor Pretensioner harness is open or shorted, Driver 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 272

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 B001A:01 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. The Diagnostic Trouble Code (DTC) will be set if the pretensioner control circuit is shorted to voltage for 2 s.

OBDII Code B001A:01 - Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery - AutoCodes.com — B001A:01 Code - Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

What does this mean?

What are the Possible Causes of the DTC B001A:01?

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

How to Fix the DTC B001A:01?

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

B001A:01 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery
B001A:02 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground
B001A:04 Driver Seat Belt Anchor Pretensioner Deployment Loop Open
B001A:0D Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance
B001A:0E Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B001A:01 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 B001A:01 code?

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Need Help with the Code?

Get the B001A:01 code diagnosed by a professional: Find a repair shop in your area

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 B001A:01 Code

1. What are the common symptoms of OBDII code B001A:01?

The common symptoms of OBDII code B001A:01, which indicates a Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery, include the airbag warning light illuminating on the dashboard and possible non-deployment of the seat belt pretensioner in the event of a collision.

2. What typically causes OBDII code B001A:01 to trigger?

OBDII code B001A:01 is usually triggered due to a short circuit in the driver seat belt anchor pretensioner deployment loop that leads to a connection with the battery, causing an electrical fault in the system.

3. How serious is OBDII code B001A:01 and should it be addressed immediately?

OBDII code B001A:01 should be taken seriously as it indicates a potential safety issue with the driver seat belt pretensioner system. It is recommended to address this code promptly to ensure proper functioning of the safety system in the vehicle.

4. Can OBDII code B001A:01 be fixed by resetting the vehicle's computer?

Resetting the vehicle's computer may temporarily clear the code, but it will not fix the underlying issue causing OBDII code B001A:01. It is important to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

5. What are some repair tips for addressing OBDII code B001A:01?

Repairing OBDII code B001A:01 may involve inspecting the wiring and connectors in the driver seat belt pretensioner system for any shorts or damage. Repair or replacement of faulty components, such as the seat belt pretensioner assembly, may be necessary to resolve the issue.

6. Is it safe to drive with OBDII code B001A:01 present?

It is not recommended to drive with OBDII code B001A:01 present, as it indicates a potential malfunction in the driver seat belt pretensioner system, which is a crucial safety component in the event of a collision. It is best to address the issue before driving the vehicle.

7. Can a DIY enthusiast fix OBDII code B001A:01 at home?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code B001A:01, dealing with airbag and seat belt pretensioner systems can be complex and dangerous. It is advisable to seek professional help to ensure the issue is addressed correctly and safely.

8. How much does it typically cost to repair OBDII code B001A:01?

The cost of repairing OBDII code B001A:01 can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is recommended to consult a mechanic or dealership for an accurate cost estimate.

9. Will OBDII code B001A:01 prevent my vehicle from passing a state inspection?

OBDII code B001A:01 may cause your vehicle to fail a state inspection, as it indicates a fault in the driver seat belt pretensioner system, which is a critical safety component. It is important to address the issue promptly to ensure your vehicle meets safety regulations.

10. How can I prevent OBDII code B001A:01 from occurring in the future?

To prevent OBDII code B001A:01 from occurring in the future, it is important to regularly inspect and maintain the driver seat belt pretensioner system. Avoid exposing the system to physical damage and ensure all electrical connections are secure to help prevent short circuits.