AutoCodes – Buick – B0070 Buick

B0070 Buick 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 Buick 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 962

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 Buick 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 Buick - Right Front/Passenger Roof Rail/Head Curtain Bag Deployment Loop Open - AutoCodes.com — B0070 Buick 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 Buick?

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 Buick?

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 Buick 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.

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

Need Help with the Code?

Get the B0070 Buick 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 Buick Code

1. What are the common symptoms of OBDII code B0070 in a Buick related to the right front/passenger roof rail/head curtain bag deployment loop being open?

- The most common symptoms include the airbag warning light illuminating on the dashboard and a potential loss of functionality in the right front passenger airbag.

2. What can cause the OBDII code B0070 to trigger in a Buick?

- The code B0070 is typically triggered when there is an open circuit or malfunction in the right front passenger roof rail/head curtain airbag deployment loop.

3. How serious is OBDII code B0070 in a Buick?

- This code indicates a potential issue with the right front passenger airbag system, which can compromise occupant safety. It is recommended to address this issue promptly.

4. What are some DIY repair tips for fixing OBDII code B0070 in a Buick?

- DIY repair tips include checking the wiring connections related to the right front passenger airbag, inspecting for any visible damage, and ensuring proper connections.

5. Can driving with OBDII code B0070 in a Buick be dangerous?

- Driving with this code present can be risky as it may indicate a problem with the right front passenger airbag system, compromising its ability to deploy in case of an accident.

6. How can a mechanic diagnose OBDII code B0070 in a Buick?

- A mechanic would use a scan tool to read the code, inspect the related wiring and connections, and perform electrical tests to pinpoint the issue causing the right front passenger airbag deployment loop to be open.

7. Are there any recalls or technical service bulletins related to OBDII code B0070 in Buick vehicles?

- It's recommended to check with Buick or the National Highway Traffic Safety Administration (NHTSA) for any recalls or technical service bulletins related to this specific OBDII code.

8. What is the typical cost to repair OBDII code B0070 in a Buick?

- The cost of repairing this code can vary depending on the root cause of the issue. It may involve repairing wiring, replacing components, or resetting the airbag system, so costs can range from moderate to significant.

9. Can resetting the OBDII code B0070 in a Buick make it go away permanently?

- Resetting the code without addressing the underlying issue will not permanently resolve the problem. It's crucial to diagnose and fix the root cause to ensure the safety and proper functionality of the airbag system.

10. Is it safe to continue driving my Buick with OBDII code B0070 if I haven't noticed any symptoms?

- It is not recommended to continue driving with this code present, even if no symptoms are noticeable. The issue may still exist and compromise the airbag system's effectiveness when needed.