AutoCodes – Infiniti – B1049 Infiniti

B1049 Infiniti Code - Driver Air Bag Module Open

Quick Answer

The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable. Common causes include Faulty Driver Air Bag, Faulty Spiral Cable, Driver Air Bag harness is open. 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 Infiniti indicates Driver Air Bag Module Open.
Common causes: Common causes include Faulty Driver Air Bag, Faulty Spiral Cable, Driver Air Bag harness is open.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 18,249

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1049 Infiniti Description

The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable. The air bag diagnosis sensor unit will monitor for opens and shorts in detected lines to the driver air bag module including the spiral cable. In case of frontal 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.

OBDII Code B1049 Infiniti - Driver Air Bag Module Open - AutoCodes.com — B1049 Infiniti Code - Driver Air Bag Module Open

What does this mean?

What are the Possible Causes of the DTC B1049 Infiniti?

Faulty Driver Air Bag
Faulty Spiral Cable
Driver Air Bag harness is open
Driver Air Bag circuit poor electrical connection

How to Fix the DTC B1049 Infiniti?

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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1049 Infiniti 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 B1049 Infiniti code?

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

Need Help with the Code?

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

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 Infiniti Code

1. What are the common symptoms of OBDII code B1049 in an Infiniti related to the driver airbag module open?

The common symptoms include the airbag warning light staying illuminated on the dashboard and the airbag system being disabled.

2. What could cause the OBDII code B1049 related to the driver airbag module open in an Infiniti?

The code B1049 typically indicates an open circuit or malfunction in the driver airbag module, which could be caused by a faulty airbag module, damaged wiring, or a poor connection.

3. How can I diagnose the OBDII code B1049 in my Infiniti if I suspect an issue with the driver airbag module?

To diagnose the issue, you may need to perform a thorough inspection of the driver airbag module, check the wiring for any damage, and use an OBDII scanner to retrieve the specific fault codes.

4. Is it safe to drive my Infiniti with the OBDII code B1049 related to the driver airbag module open?

It is not recommended to drive the vehicle with the airbag system disabled, as it may compromise the safety of the driver in the event of a collision. It is advised to address the issue promptly.

5. Can I repair the OBDII code B1049 related to the driver airbag module open in my Infiniti on my own?

While some DIY enthusiasts may attempt to repair the issue themselves, it is recommended to seek professional assistance when dealing with airbag systems due to their critical safety nature.

6. How much does it typically cost to repair the OBDII code B1049 in an Infiniti caused by a driver airbag module open?

The cost of repair can vary depending on the exact cause of the issue and the labor rates in your area. It is advisable to consult a mechanic or dealership for an accurate estimate.

7. Are there any safety precautions to follow when working on the driver airbag module in an Infiniti to address the OBDII code B1049?

It is crucial to disconnect the vehicle's battery and wait for a specified period to discharge any residual electrical energy before working on the airbag system to prevent accidental deployment.

8. Can the OBDII code B1049 related to the driver airbag module open in an Infiniti be reset after repairs are made?

After the necessary repairs have been completed, the fault codes can be cleared using an OBDII scanner to reset the system and turn off the airbag warning light on the dashboard.

9. What are the long-term consequences of ignoring the OBDII code B1049 in an Infiniti indicating a driver airbag module open?

Ignoring the issue can pose a significant risk in the event of a collision, as the driver airbag may not deploy properly or at all, potentially leading to more severe injuries.

10. Is the OBDII code B1049 related to the driver airbag module open a common issue in Infiniti vehicles?

While the occurrence of this specific code may vary, issues with the driver airbag module can arise in any vehicle over time due to wear and tear, making it essential to address any related fault codes promptly.