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Engine-Codes – Generic – B1049

B1049 Code - Driver Air Bag Module Open

Quick Answer

The B1049 code indicates that there is an issue with the driver airbag module being open. Common causes include Faulty wiring or connectors in the airbag system, A damaged driver airbag module, Corrosion or moisture in the airbag system. 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
B1049 indicates Driver Air Bag Module Open.
Common causes
Common causes include Faulty wiring or connectors in the airbag system, A damaged driver airbag module, Corrosion or moisture in the airbag system.
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 06, 2024
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Code B1049 Description

The B1049 code indicates that there is an issue with the driver airbag module being open. This means that the circuit in the airbag system that controls the deployment of the driver's airbag is not functioning properly. The driver airbag is a crucial safety component in a vehicle, designed to deploy in the event of a collision to protect the driver from serious injury.

OBDII Code B1049 - Driver Air Bag Module Open
B1049 Code - Driver Air Bag Module Open

Common Causes of B1049

  1. Faulty wiring or connectors in the airbag system.
  2. A damaged driver airbag module.
  3. Corrosion or moisture in the airbag system.
  4. Impact or collision that damaged the airbag system.
  5. Faulty clock spring in the steering column.

Symptoms of B1049

  1. The airbag warning light on the dashboard may illuminate.
  2. The horn may not work properly, as it is often connected to the same circuit as the airbag.
  3. The cruise control system may be disabled.
  4. The airbag may not deploy in a crash.
  5. Diagnostic trouble codes related to the airbag system may be stored in the vehicle's computer.

How to Fix B1049

  1. Diagnose the issue using a scan tool to read the fault codes and pinpoint the exact cause of the open circuit.
  2. Inspect the wiring and connectors in the airbag system for any damage or corrosion. Repair or replace as needed.
  3. Test the driver airbag module to determine if it is functioning properly. Replace if necessary.
  4. Check the clock spring in the steering column for any faults. Repair or replace as needed.
  5. Clear the fault codes from the vehicle's computer and test the airbag system to ensure it is working correctly.

Cost to Fix B1049

The cost of repairing a B1049 code can vary depending on the underlying cause of the issue. On average, drivers can expect to pay between $200 and $500 for parts and labor to resolve this problem. However, it is important to note that labor rates and parts prices can vary greatly depending on the location, vehicle make and model, and the specific repair shop. It is recommended to obtain quotes from multiple repair shops to get an accurate estimate for the repair.

What does this mean?

Tech Notes for B1049

Factory Service Manual Repair Order:

1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sensor unit.
6. Replace the related harness.

When is the Code Detected?

Driver air bag module circuit is open (including the spiral cable).

Need more information about the B1049 code?

Need more information on how to fix the B1049 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1049 code diagnosed by a professional: Find a repair shop in your area

Code B1049 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 B1049 Code

1. What are common symptoms of OBDII code B1049 - Driver Air Bag Module Open?

The common symptoms of this code include the airbag warning light illuminating on the dashboard and a possible loss of functionality of the driver's airbag.

2. What can cause the OBDII code B1049 - Driver Air Bag Module Open?

This code is typically caused by a fault in the driver's airbag module, such as a wiring issue, a loose connection, or a malfunctioning airbag module itself.

3. How serious is the OBDII code B1049 - Driver Air Bag Module Open?

This code is serious as it indicates a potential problem with the driver's airbag system, which is a critical safety feature in the event of a collision. It is important to address this issue promptly.

4. Can I still drive my vehicle with the OBDII code B1049 - Driver Air Bag Module Open?

It is not recommended to drive the vehicle with this code present, as the driver's airbag may not deploy in the event of an accident, compromising your safety.

5. How can I diagnose the OBDII code B1049 - Driver Air Bag Module Open?

Diagnosing this code typically requires a professional OBDII scanner to read the fault codes and further inspection of the driver's airbag system components.

6. What is the typical repair for the OBDII code B1049 - Driver Air Bag Module Open?

The repair for this code usually involves inspecting and repairing any wiring issues, connectors, or replacing the driver's airbag module if necessary.

7. Can I reset the OBDII code B1049 - Driver Air Bag Module Open on my own?

While you can clear the fault code with an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it cost to repair the OBDII code B1049 - Driver Air Bag Module Open?

The cost of repair can vary depending on the specific cause of the issue. It is recommended to consult a professional for an accurate diagnosis and cost estimate.

9. Are there any safety precautions I should take if I suspect the OBDII code B1049 - Driver Air Bag Module Open?

If you suspect an issue with the driver's airbag system, it is essential to prioritize your safety and have the vehicle inspected by a qualified technician as soon as possible.

10. Can the OBDII code B1049 - Driver Air Bag Module Open be intermittent?

Yes, it is possible for the code to be intermittent, especially if the issue is related to a loose connection or intermittent wiring problem. It is still important to address the underlying cause to ensure proper airbag functionality.

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