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B1150 Nissan Code - Left Side Curtain Air Bag Module Open

Quick Answer

The B1150 Nissan code indicates that there is an issue with the left side curtain airbag module being open. Common causes include Faulty left side curtain airbag module, Wiring or electrical issues in the airbag system, Impact or collision that damaged the 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
B1150 Nissan indicates Left Side Curtain Air Bag Module Open.
Common causes
Common causes include Faulty left side curtain airbag module, Wiring or electrical issues in the airbag system, Impact or collision that damaged the 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 14, 2024
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Code B1150 Nissan Description

The B1150 Nissan code indicates that there is an issue with the left side curtain airbag module being open. The curtain airbag system is designed to provide additional protection to occupants in the event of a side impact or rollover. When this code is triggered, it means that the left side curtain airbag module is not functioning properly, which could compromise the safety of the vehicle's occupants in the event of a collision.

OBDII Code B1150 Nissan - Left Side Curtain Air Bag Module Open
B1150 Nissan Code - Left Side Curtain Air Bag Module Open

Common Causes of B1150 Nissan

  1. Faulty left side curtain airbag module.
  2. Wiring or electrical issues in the airbag system.
  3. Impact or collision that damaged the airbag module.
  4. Corrosion or damage to the connectors or wiring harness.
  5. Software or programming issues in the airbag control module.

Symptoms of B1150 Nissan

  1. Airbag warning light illuminated on the dashboard.
  2. Error code B1150 stored in the vehicle's computer system.
  3. Loss of functionality of the left side curtain airbag.
  4. Vehicle may fail safety inspections or crash tests.

How to Fix B1150 Nissan

  1. Diagnose the issue by using a scan tool to retrieve the specific error code and pinpoint the problem.
  2. Inspect the left side curtain airbag module, wiring, and connectors for any visible damage or corrosion.
  3. Repair or replace any damaged wiring, connectors, or components in the airbag system.
  4. Clear the error code from the vehicle's computer system and test the airbag system to ensure proper functionality.
  5. If necessary, recalibrate or reprogram the airbag control module to address any software or programming issues.

Cost to Fix B1150 Nissan

The cost of repairing a B1150 Nissan code can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. In general, the cost of replacing a left side curtain airbag module can range from $500 to $1000, including parts and labor. Additional costs may apply if there are other issues in the airbag system that need to be addressed. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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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 B1150 Nissan Code

1. What does the OBDII code B1150 mean on a Nissan?

The code B1150 indicates an open circuit in the left side curtain airbag module, which means the airbag system has detected a fault and may not deploy properly in an accident.

2. What are the symptoms of code B1150 in a Nissan?

Common symptoms include an illuminated airbag warning light on the dashboard and potentially no deployment of the left side curtain airbag in the event of a collision.

3. What causes the B1150 code to appear?

Causes can include a damaged or disconnected wiring harness, a faulty left side curtain airbag module, a corroded connector, or a problem in the airbag control unit.

4. Can I drive my car with the B1150 code active?

While the car may still be driveable, the airbag system may not function correctly in an accident, posing a serious safety risk. It’s best to address the issue promptly.

5. How is the B1150 code diagnosed?

A technician will use a scan tool to read the code, inspect the wiring and connectors for damage or corrosion, and test the left side curtain airbag module for continuity.

6. Can a loose connection cause the B1150 code?

Yes, a loose or disconnected wiring connection to the left side curtain airbag module is a common cause of this code.

7. How can I fix the B1150 code on my Nissan?

Repairs may include reconnecting or replacing damaged wires, cleaning corroded connectors, or replacing the left side curtain airbag module if it’s defective.

8. How much does it cost to repair the B1150 code?

Repair costs vary depending on the cause. Simple wiring repairs may cost $100-$200, while replacing the airbag module can cost $500 or more, including labor.

9. Does the B1150 code mean my airbag will not work at all?

Yes, if the system detects an open circuit in the left side curtain airbag, it will likely disable the entire airbag system to prevent improper deployment.

10. Can I reset the B1150 code without fixing the problem?

Clearing the code without addressing the underlying issue will not solve the problem, and the code will likely reappear as soon as the system detects the fault again.

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