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Engine-Codes – Generic – B1070

B1070 Code - Assist Air Bag Module Open

Quick Answer

The B1070 diagnostic trouble code indicates that there is an issue with the Assist Air Bag Module being open. Common causes include Loose or damaged wiring connections to the Assist Air Bag Module, Faulty Assist Air Bag Module, Corrosion or water damage to the module. 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
B1070 indicates Assist Air Bag Module Open.
Common causes
Common causes include Loose or damaged wiring connections to the Assist Air Bag Module, Faulty Assist Air Bag Module, Corrosion or water damage to the module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code B1070 Description

The B1070 diagnostic trouble code indicates that there is an issue with the Assist Air Bag Module being open. The Assist Air Bag Module is a crucial component of the vehicle's airbag system, responsible for deploying the airbags in the event of a collision to protect the occupants. When this module is open, it means that there is a circuit or connection problem that is preventing the airbags from functioning properly.

OBDII Code B1070 - Assist Air Bag Module Open
B1070 Code - Assist Air Bag Module Open

Common Causes of B1070

  1. Loose or damaged wiring connections to the Assist Air Bag Module.
  2. Faulty Assist Air Bag Module.
  3. Corrosion or water damage to the module.
  4. Impact or collision that caused damage to the module.
  5. Electrical issues within the vehicle's airbag system.

Symptoms of B1070

  1. Airbag warning light illuminated on the dashboard.
  2. Inability to turn off the airbag warning light even after resetting.
  3. Fault codes related to the airbag system stored in the vehicle's computer.
  4. Non-deployment of airbags in a crash situation.

How to Fix B1070

  1. Begin by conducting a thorough inspection of the wiring connections to the Assist Air Bag Module to check for any loose or damaged connections. Repair or replace any faulty wiring as needed.
  2. If the wiring is in good condition, proceed to test the Assist Air Bag Module itself for faults. If the module is found to be faulty, it will need to be replaced with a new one.
  3. Check for any signs of corrosion or water damage to the module, as this can also cause the issue. Clean or replace the module if necessary.
  4. If the issue persists, further diagnostic testing may be required to identify any underlying electrical problems within the airbag system that could be triggering the code.
  5. Once the issue has been identified and repaired, clear the fault codes from the vehicle's computer to reset the system.

Cost to Fix B1070

The cost of repairing a B1070 code related to an Assist Air Bag Module Open can vary depending on the extent of the issue and the specific vehicle make and model. In general, the cost of replacing the Assist Air Bag Module can range from $200 to $600, including parts and labor. Additional costs may be incurred if there are other underlying electrical issues that need to be addressed. It is recommended to consult with a professional mechanic to get an accurate estimate based on your specific vehicle and location. Labor rates at auto repair shops typically range from $80 to $150 per hour.

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Code B1070 Information for Specific Makes

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 B1070 Code

1. What are the common symptoms of OBDII code B1070 - Assist Air Bag Module Open?

The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the airbags during a collision.

2. What are the possible causes of OBDII code B1070 - Assist Air Bag Module Open?

The code B1070 can be caused by a faulty or disconnected connection in the assist airbag module circuit, a problem with the airbag control module, or damaged wiring.

3. How can I diagnose the cause of OBDII code B1070 - Assist Air Bag Module Open?

Diagnosing the issue typically involves using a diagnostic scanner to retrieve the trouble codes, checking the wiring and connections associated with the assist airbag module, and testing the airbag control module for faults.

4. Is it safe to drive with OBDII code B1070 - Assist Air Bag Module Open?

It is not recommended to drive with the B1070 code present, as it indicates a potential issue with the airbag system, which is crucial for occupant safety in the event of a collision.

5. How can I repair OBDII code B1070 - Assist Air Bag Module Open?

Repairing the B1070 code may involve inspecting and repairing any damaged wiring or connections, resetting the airbag control module, or replacing faulty components in the assist airbag circuit.

6. Can I reset OBDII code B1070 - Assist Air Bag Module Open myself?

While you can attempt to clear the trouble code using a diagnostic scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it cost to repair OBDII code B1070 - Assist Air Bag Module Open?

The cost of repairing the B1070 code can vary depending on the root cause of the issue, the extent of the repairs needed, and whether any parts need to be replaced.

8. Will OBDII code B1070 - Assist Air Bag Module Open affect the functionality of other vehicle systems?

While the B1070 code specifically relates to the assist airbag module, it is essential to address the issue promptly to ensure the overall safety and functionality of the vehicle's airbag system.

9. Are there any common DIY fixes for OBDII code B1070 - Assist Air Bag Module Open?

Common DIY fixes for the B1070 code may include checking and securing connections, inspecting for visible wiring damage, and resetting the airbag control module.

10. How often should I have my vehicle inspected for potential airbag system issues related to OBDII code B1070 - Assist Air Bag Module Open?

Regular inspections and maintenance checks, especially after any significant impact or collision, are recommended to ensure the airbag system is functioning correctly and to catch any potential issues early on.

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