AutoCodes – Chevrolet – B0068 Chevrolet

B0068 Chevrolet Code - Left Front/Driver Roof Rail/Head Curtain Bag Deployment Loop Voltage Out of Range

Quick Answer

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - left and the roof rail module high and low circuits. Common causes include Faulty Left Front/Driver Roof Rail/Head Curtain Bag, Left Front/Driver Roof Rail/Head Curtain Bag harness is open or shorted, Left Front/Driver Roof Rail/Head Curtain Bag 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: B0068 Chevrolet indicates Left Front/Driver Roof Rail/Head Curtain Bag Deployment Loop Voltage Out of Range.
Common causes: Common causes include Faulty Left Front/Driver Roof Rail/Head Curtain Bag, Left Front/Driver Roof Rail/Head Curtain Bag harness is open or shorted, Left Front/Driver Roof Rail/Head Curtain Bag 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,766

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B0068 Chevrolet Description

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - left and the roof rail module high and low circuits. A shorting bar used within the roof rail module connector shorts together both the roof rail module high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. During a side or 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 roof rail module. 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 B0068 Chevrolet - Left Front/Driver Roof Rail/Head Curtain Bag Deployment Loop Voltage Out of Range - AutoCodes.com — B0068 Chevrolet Code - Left Front/Driver Roof Rail/Head Curtain Bag Deployment Loop Voltage Out of Range

What does this mean?

What are the Possible Causes of the DTC B0068 Chevrolet?

Faulty Left Front/Driver Roof Rail/Head Curtain Bag
Left Front/Driver Roof Rail/Head Curtain Bag harness is open or shorted
Left Front/Driver Roof Rail/Head Curtain Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0068 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0068 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 B0068 Chevrolet code?

Need more information on how to fix the B0068 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0068 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 B0068 Chevrolet Code

1. What are the common symptoms of OBDII code B0068 in a Chevrolet?

- Common symptoms include the airbag warning light illuminating on the dashboard, loss of power to the left front/driver roof rail/head curtain airbag, and potential non-deployment of the airbag in a collision.

2. What does the OBDII code B0068 Chevrolet indicate?

- The code B0068 indicates that the voltage in the left front/driver roof rail/head curtain airbag deployment loop is out of the expected range.

3. What are the possible causes of OBDII code B0068 in a Chevrolet?

- Possible causes include a faulty airbag deployment loop, damaged wiring or connectors in the airbag system, a malfunctioning airbag control module, or a problem with the airbag deployment circuit.

4. How can I diagnose the cause of OBDII code B0068 in my Chevrolet?

- Diagnosing the issue typically involves using a scan tool to retrieve the specific trouble code, inspecting the wiring and connectors in the airbag system for damage, and testing the airbag deployment loop for proper voltage levels.

5. Can I drive my Chevrolet with OBDII code B0068 present?

- It is not recommended to drive the vehicle with the B0068 code active, as it indicates a potential issue with the airbag system's functionality, which could compromise passenger safety in the event of a collision.

6. How can I repair OBDII code B0068 in a Chevrolet?

- Repairing the B0068 code may involve repairing or replacing the left front/driver roof rail/head curtain airbag deployment loop, fixing any damaged wiring or connectors, resetting the airbag control module, and clearing the trouble code.

7. Is it safe to reset the OBDII code B0068 in my Chevrolet without fixing the underlying issue?

- It is not recommended to reset the code without fixing the underlying problem, as it could lead to the airbag system not functioning properly in the event of an accident, putting occupants at risk.

8. Can a DIY enthusiast repair OBDII code B0068 in a Chevrolet?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, addressing the root cause of the B0068 code may require specialized tools, expertise, and safety precautions best left to professional technicians.

9. How much does it typically cost to repair OBDII code B0068 in a Chevrolet?

- The cost of repairing the B0068 code can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to get a professional diagnosis for an accurate estimate.

10. Are there any recalls or service bulletins related to OBDII code B0068 in Chevrolet vehicles?

- It is recommended to check with a Chevrolet dealership or the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or service bulletins related to the B0068 code in your specific Chevrolet model.