AutoCodes – Chevrolet – B0065 Chevrolet

B0065 Chevrolet Code - Left Front/Driver Pretensioner Deployment Loop Open

Quick Answer

The driver seat belt pretensioner deployment loop consists of a seat belt pretensioner - LF and the seat belt pretensioner - LF high and low circuits. Common causes include Faulty Left Front/Driver Pretensioner, Left Front/Driver Pretensioner harness is open or shorted, Left Front/Driver 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: B0065 Chevrolet indicates Left Front/Driver Pretensioner Deployment Loop Open.
Common causes: Common causes include Faulty Left Front/Driver Pretensioner, Left Front/Driver Pretensioner harness is open or shorted, Left Front/Driver 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 3,291

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 28, 2020

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B0065 Chevrolet Description

The driver seat belt pretensioner deployment loop consists of a seat belt pretensioner - LF and the seat belt pretensioner - LF high and low circuits. A shorting bar used within the seat belt pretensioner connector shorts together both the seat belt pretensioner high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the pretensioner during servicing. During a frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the seat belt pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.

OBDII Code B0065 Chevrolet - Left Front/Driver Pretensioner Deployment Loop Open - AutoCodes.com — B0065 Chevrolet Code - Left Front/Driver Pretensioner Deployment Loop Open

What does this mean?

What are the Possible Causes of the DTC B0065 Chevrolet?

Faulty Left Front/Driver Pretensioner
Left Front/Driver Pretensioner harness is open or shorted
Left Front/Driver Pretensioner circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0065 Chevrolet?

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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0065 Chevrolet 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 B0065 Chevrolet code?

Need more information on how to fix the B0065 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0065 Chevrolet 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 B0065 Chevrolet Code

1. What does the OBDII code B0065 for a Chevrolet indicate?

The code B0065 specifically refers to the Left Front/Driver Pretensioner Deployment Loop Open, signaling an issue with the driver's seatbelt pretensioner system.

2. What are the common symptoms of OBDII code B0065 in a Chevrolet?

Common symptoms associated with code B0065 include the airbag warning light illuminating on the dashboard and potential non-deployment of the driver's seatbelt pretensioner in the event of a collision.

3. What are the possible causes of OBDII code B0065 in a Chevrolet?

The code B0065 in a Chevrolet can be triggered by issues such as a faulty seatbelt pretensioner, damaged wiring or connectors in the deployment loop, or a malfunctioning airbag control module.

4. How can I diagnose the OBDII code B0065 in my Chevrolet?

Diagnosing OBDII code B0065 typically involves using a scan tool to retrieve the specific fault code, inspecting the seatbelt pretensioner system for visible damage, and checking the wiring and connectors for any signs of wear or disconnection.

5. Can I still drive my Chevrolet with OBDII code B0065 present?

It is not recommended to drive your Chevrolet with code B0065 present, as it indicates a potential safety issue with the driver's seatbelt pretensioner system, which may affect its functionality in the event of an accident.

6. How can I repair OBDII code B0065 in my Chevrolet?

Repairing OBDII code B0065 typically involves replacing the faulty seatbelt pretensioner, repairing or replacing damaged wiring or connectors, and resetting the airbag control module to clear the fault code.

7. Is it safe to reset the OBDII code B0065 in my Chevrolet without fixing the underlying issue?

Resetting the OBDII code B0065 without addressing the underlying problem may temporarily clear the fault code, but it will not resolve the safety issue with the driver's seatbelt pretensioner system. It is essential to repair the problem to ensure proper functionality.

8. Can a DIY enthusiast fix OBDII code B0065 in a Chevrolet?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code B0065, it is recommended to consult a certified mechanic or technician for proper diagnosis and repair to ensure the safety systems are functioning correctly.

9. How much does it cost to repair OBDII code B0065 in a Chevrolet?

The cost of repairing OBDII code B0065 in a Chevrolet can vary depending on the cause of the issue, the extent of the repairs needed, and the labor rates in your area. It is advisable to get a few quotes from different mechanics to compare prices.

10. Can OBDII code B0065 in a Chevrolet be prevented?

While some causes of OBDII code B0065 may be due to wear and tear over time, regular maintenance and prompt repairs of any issues with the seatbelt pretensioner system can help prevent the occurrence of this fault code.