AutoCodesGeneric – B1129

B1129 Code - Front Right Side Air Bag Module Open

Quick Answer

In case of collision whose acceleration exceeds the specified level, the ignition materials are ignited by the electric ignition system. Common causes include Faulty Front Right Side Air Bag Module, Front Right Side Air Bag Module harness is open or shorted, Front Right Side Air Bag Module 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
B1129 indicates Front Right Side Air Bag Module Open.
Common causes
Common causes include Faulty Front Right Side Air Bag Module, Front Right Side Air Bag Module harness is open or shorted, Front Right Side Air Bag Module 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 15,539
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B1129 Description

In case of collision whose acceleration exceeds the specified level, the ignition materials are ignited by the electric ignition system. The system burns and introduces the chemical reaction of gas generating materials to generate hot gases that flow into the air bag through a filter and expand the bag.
Front Right Side Air Bag Module mainly consists of air bag and inflator which inflates the air bag.
OBDII Code B1129 - Front Right Side Air Bag Module Open - AutoCodes.com
B1129 Code - Front Right Side Air Bag Module Open

What are the Possible Causes of the DTC B1129?

  • Faulty Front Right Side Air Bag Module
  • Front Right Side Air Bag Module harness is open or shorted
  • Front Right Side Air Bag Module circuit poor electrical connection

How to Fix the DTC B1129?

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 B1129 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 B1129 code?

Need more information on how to fix the B1129 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1129 code diagnosed by a professional: Find a repair shop in your area

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 B1129 Code

1. What are the common symptoms of OBDII code B1129 (Front Right Side Air Bag Module Open)?

- The common symptoms include the airbag warning light illuminating on the dashboard and the airbag system potentially being disabled.

2. What are the possible causes of OBDII code B1129?

- The code B1129 can be triggered by a faulty front right side air bag module, damaged wiring harness, loose connections, or a blown fuse.

3. How serious is OBDII code B1129?

- OBDII code B1129 should be taken seriously as it indicates a potential issue with the front right side airbag module, which is a critical safety component in the event of a collision.

4. Can I continue driving with OBDII code B1129 present?

- It is not recommended to drive with OBDII code B1129 active, as the airbag system may not function properly in the event of an accident, compromising occupant safety.

5. How can I diagnose OBDII code B1129?

- Diagnosis typically involves using a compatible OBDII scanner to retrieve the code, followed by inspecting the front right side airbag module, wiring, and connections for any visible damage.

6. What are some repair tips for resolving OBDII code B1129?

- Repair tips include checking and repairing any damaged wiring, ensuring secure connections, replacing the front right side airbag module if necessary, and resetting the fault code.

7. Can I reset OBDII code B1129 without fixing the underlying issue?

- While you can clear the fault code temporarily, it is crucial to address the root cause of the problem to ensure the proper functioning of the airbag system.

8. How much does it cost to repair OBDII code B1129?

- The cost of repairing OBDII code B1129 can vary depending on the specific cause of the issue, but it may involve expenses related to parts replacement and labor.

9. Is it possible to prevent OBDII code B1129 from occurring?

- Regular maintenance of the airbag system, including checking for any signs of wear or damage, can help prevent issues like OBDII code B1129 from occurring.

10. Can a DIY enthusiast fix OBDII code B1129 at home?

- Depending on the individual's skill level and access to tools, DIY enthusiasts may be able to address OBDII code B1129 by following repair guides and safety precautions. However, complex issues may require professional intervention.

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