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Engine-Codes – Generic – B1071

B1071 Code - Assist Air Bag Module Short

Quick Answer

The B1071 diagnostic trouble code (DTC) refers to an Assist Air Bag Module Short. Common causes include Damaged wiring or connectors leading to the assist airbag module, Corrosion or moisture intrusion in the airbag system components, Faulty assist airbag 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
B1071 indicates Assist Air Bag Module Short.
Common causes
Common causes include Damaged wiring or connectors leading to the assist airbag module, Corrosion or moisture intrusion in the airbag system components, Faulty assist airbag 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 10, 2024
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Code B1071 Description

The B1071 diagnostic trouble code (DTC) refers to an Assist Air Bag Module Short. This code indicates that there is a short circuit in the assist airbag module within the vehicle's airbag system. The assist airbag module is a crucial component of the vehicle's supplemental restraint system (SRS), designed to deploy in the event of a collision to protect occupants from serious injury.

OBDII Code B1071 - Assist Air Bag Module Short
B1071 Code - Assist Air Bag Module Short

Common Causes of B1071

  1. Damaged wiring or connectors leading to the assist airbag module
  2. Corrosion or moisture intrusion in the airbag system components
  3. Faulty assist airbag module
  4. Impact or collision that damaged the airbag system components
  5. Manufacturing defect in the airbag system components

Symptoms of B1071

  1. Illuminated airbag warning light on the dashboard
  2. Inability to activate or deactivate the passenger-side airbag
  3. Inconsistent or erratic deployment of the airbags
  4. Diagnostic trouble code stored in the vehicle's computer system

How to Fix B1071

  1. Begin by diagnosing the exact location of the short circuit using a multimeter and wiring diagram.
  2. Inspect and repair any damaged wiring or connectors leading to the assist airbag module.
  3. Test the assist airbag module for proper functionality and replace if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and perform a test to ensure the issue has been resolved.
  5. Reset the airbag system and ensure that all safety features are functioning properly.

Cost to Fix B1071

The typical repair costs for addressing a B1071 code can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the cost of repairing a short circuit in the assist airbag module can range from $200 to $500, including parts and labor. However, it's important to note that the actual cost may be higher or lower depending on the location, vehicle make and model, and the rates charged by the auto repair shop. It's recommended to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

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Code B1071 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 B1071 Code

1. What are the common symptoms of OBDII code B1071, Assist Air Bag Module Short?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential loss of functionality in the airbag system.

2. What are the possible causes of OBDII code B1071, Assist Air Bag Module Short?

- The code may be triggered by a short circuit in the wiring harness, a faulty airbag module, or a loose connection in the airbag system.

3. How can I diagnose OBDII code B1071, Assist Air Bag Module Short?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, inspecting the airbag system wiring, connectors, and components for any visible damage, and performing continuity tests.

4. What should I do if I encounter OBDII code B1071, Assist Air Bag Module Short?

- It is important to address the issue promptly to ensure the airbag system functions correctly in case of an accident. Seek professional help for proper diagnosis and repair.

5. Can I drive my vehicle with OBDII code B1071, Assist Air Bag Module Short?

- It is not recommended to drive the vehicle with an unresolved airbag issue as it may compromise your safety in the event of a collision. Have the problem fixed as soon as possible.

6. Are there any DIY repair tips for fixing OBDII code B1071, Assist Air Bag Module Short?

- While basic inspections can be done, repairing airbag-related issues should be left to trained professionals due to the critical safety implications involved.

7. How much does it cost to repair OBDII code B1071, Assist Air Bag Module Short?

- The cost of repair can vary depending on the specific cause of the issue, parts needed, and labor charges. It is advisable to obtain estimates from reputable repair shops.

8. Can resetting the OBDII code B1071, Assist Air Bag Module Short resolve the issue?

- Simply clearing the code without addressing the underlying problem will not fix the airbag module short. The root cause of the issue needs to be identified and repaired.

9. Is OBDII code B1071, Assist Air Bag Module Short a common problem in certain car models?

- The prevalence of this code may vary among different vehicle makes and models, but airbag system issues are generally important safety concerns across the board.

10. How can I prevent OBDII code B1071, Assist Air Bag Module Short from occurring in the future?

- Regular maintenance checks, careful handling of the airbag system components, and addressing any warning lights promptly can help prevent such issues in the future.

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