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Engine-Codes – Generic – B1072

B1072 Code - Assist Air Bag Module Short

Quick Answer

The B1072 diagnostic trouble code refers to an Assist Air Bag Module Short. Common causes include Wiring or harness damage, Faulty airbag module, Loose or corroded connections. 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
B1072 indicates Assist Air Bag Module Short.
Common causes
Common causes include Wiring or harness damage, Faulty airbag module, Loose or corroded connections.
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 11, 2024
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Code B1072 Description

The B1072 diagnostic trouble code refers to an Assist Air Bag Module Short. This code indicates that there is a short circuit in the airbag module of the vehicle's supplemental restraint system (SRS). The airbag module is a crucial component of the SRS, responsible for deploying the airbags in the event of a collision to help protect the occupants from injury. A short circuit in the airbag module can prevent the airbags from deploying properly, compromising the safety of the vehicle's occupants.

OBDII Code B1072 - Assist Air Bag Module Short
B1072 Code - Assist Air Bag Module Short

Common Causes of B1072

  1. Wiring or harness damage
  2. Faulty airbag module
  3. Loose or corroded connections
  4. Water damage to the airbag module
  5. Impact damage to the airbag module

Symptoms of B1072

  1. Airbag warning light illuminated on the dashboard
  2. Inability to turn off airbag warning light
  3. Airbags not deploying in the event of a collision
  4. Inconsistent or erratic airbag deployment

How to Fix B1072

  1. Diagnose the issue: Use a diagnostic scanner to read the codes and identify the specific cause of the short circuit in the airbag module.
  2. Inspect wiring and connections: Check the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Replace the airbag module: If the airbag module itself is faulty, it will need to be replaced with a new unit to resolve the short circuit issue.
  4. Clear codes and reset system: Once the repair is complete, clear the diagnostic trouble codes from the system and reset the airbag module to ensure proper functioning.
  5. Perform a system check: After the repair, perform a thorough system check to ensure that the airbag system is functioning correctly and that the airbags deploy as intended in a controlled test environment.

Cost to Fix B1072

The typical repair costs for addressing a B1072 code related to an Assist Air Bag Module Short can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Generally, the cost of replacing an airbag module and addressing wiring or connection issues can range from $200 to $800 or more. It is important to note that diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check with local auto repair shops for a more accurate estimate.

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Code B1072 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 B1072 Code

1. What are the common symptoms of OBDII code B1072 Assist Air Bag Module Short?

- Common symptoms include the airbag warning light illuminated on the dashboard and potential issues with the airbag system.

2. What are the possible causes of OBDII code B1072 Assist Air Bag Module Short?

- The code B1072 can be triggered by a short circuit in the wiring harness, a faulty airbag module, or a damaged airbag sensor.

3. How can I diagnose OBDII code B1072 Assist Air Bag Module Short?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code and then inspecting the wiring, connectors, and components related to the airbag system for any visible damage or issues.

4. Can I drive my vehicle with OBDII code B1072 Assist Air Bag Module Short?

- It is not recommended to drive the vehicle with an active airbag fault code, as it may compromise the safety of the airbag system in the event of a collision.

5. How can I repair OBDII code B1072 Assist Air Bag Module Short?

- Repairing this code may involve repairing or replacing damaged wiring, connectors, or components in the airbag system, as well as clearing the fault code with a diagnostic scanner.

6. Are there any safety concerns associated with OBDII code B1072 Assist Air Bag Module Short?

- Yes, unresolved airbag system issues can pose a safety risk in the event of a collision, as the airbags may not deploy properly or at all.

7. Can a DIY enthusiast fix OBDII code B1072 Assist Air Bag Module Short?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing airbag system faults often require specialized knowledge and tools, so it is recommended to consult a professional.

8. How much does it typically cost to repair OBDII code B1072 Assist Air Bag Module Short?

- The cost of repair can vary depending on the specific cause of the fault, but it may involve expenses for parts replacement, labor, and diagnostic services.

9. Will resetting the fault code make OBDII code B1072 Assist Air Bag Module Short go away?

- Simply resetting the fault code without addressing the underlying issue will not fix the problem. It is essential to diagnose and repair the root cause of the fault to prevent it from reoccurring.

10. How often does OBDII code B1072 Assist Air Bag Module Short occur in vehicles?

- The occurrence of this specific fault code can vary among different vehicle models and manufacturers, but issues related to the airbag system are relatively common in modern vehicles.

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