AutoCodes – Chevrolet – B0070 Chevrolet

B0070 Chevrolet Code - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open

Quick Answer

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - right and the roof rail module high and low circuits. Common causes include Faulty Right Front/Passenger Roof Rail/Head Curtain Bag, Right Front/Passenger Roof Rail/Head Curtain Bag harness is open or shorted, Right Front/Passenger 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: B0070 Chevrolet indicates Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open.
Common causes: Common causes include Faulty Right Front/Passenger Roof Rail/Head Curtain Bag, Right Front/Passenger Roof Rail/Head Curtain Bag harness is open or shorted, Right Front/Passenger 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.

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Code Popularity 1,433

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0070 Chevrolet Description

The driver roof rail deployment loop consists of an inflatable restraint roof rail module - right 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 B0070 Chevrolet - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open - AutoCodes.com — B0070 Chevrolet Code - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open

What does this mean?

What are the Possible Causes of the DTC B0070 Chevrolet?

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

How to Fix the DTC B0070 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 B0070 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 B0070 Chevrolet code?

Need more information on how to fix the B0070 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0070 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 B0070 Chevrolet Code

1. What are the common symptoms of OBDII code B0070 in a Chevrolet?

The common symptoms of OBDII code B0070 in a Chevrolet include the airbag warning light illuminating on the dashboard and a diagnostic trouble code indicating "Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open."

2. What does the OBDII code B0070 indicating a "Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open" mean in a Chevrolet?

This code indicates that there is an issue with the right front or passenger side roof rail airbag deployment loop, suggesting a potential problem with the airbag system's circuit.

3. What are some possible causes of OBDII code B0070 in a Chevrolet?

Possible causes of OBDII code B0070 in a Chevrolet include a faulty airbag deployment loop, damaged wiring or connectors in the airbag system, or a problem with the airbag control module.

4. How can I diagnose the OBDII code B0070 in my Chevrolet?

Diagnosing OBDII code B0070 in a Chevrolet typically involves using a scan tool to retrieve the specific fault code, inspecting the airbag system components for any visible damage, and testing the wiring and connectors for continuity and proper connections.

5. What are the repair options for fixing OBDII code B0070 in a Chevrolet?

Repair options for fixing OBDII code B0070 in a Chevrolet may include repairing or replacing the right front or passenger roof rail airbag deployment loop, repairing damaged wiring or connectors, or reprogramming the airbag control module.

6. Is it safe to drive my Chevrolet with OBDII code B0070?

It is not recommended to drive your Chevrolet with OBDII code B0070 present, as it indicates a potential issue with the airbag system, which is a critical safety feature in the event of a collision.

7. Can I reset the OBDII code B0070 in my Chevrolet by disconnecting the battery?

While disconnecting the battery may reset the code temporarily, it is not a recommended long-term solution. It is important to diagnose and repair the underlying issue causing OBDII code B0070 to ensure the proper functioning of the airbag system.

8. How much does it typically cost to repair OBDII code B0070 in a Chevrolet?

The cost of repairing OBDII code B0070 in a Chevrolet can vary depending on the specific cause of the issue, parts needed for repair, and labor costs. It is advisable to consult a professional mechanic for an accurate cost estimate.

9. Can a DIY enthusiast repair OBDII code B0070 in a Chevrolet?

Repairing OBDII code B0070 in a Chevrolet may require specialized knowledge and tools related to airbag systems. It is recommended to consult a qualified mechanic or technician for proper diagnosis and repair to ensure safety and effectiveness.

10. How often does OBDII code B0070 occur in Chevrolet vehicles?

OBDII code B0070 indicating a "Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open" is a relatively uncommon issue in Chevrolet vehicles, but it can occur due to various factors such as age, wear and tear, or accidents.