AutoCodes – Generic – B1146

B1146 Code - Right Side Curtain Air Bag Module Short

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 Right Side Curtain Air Bag Module, Right Side Curtain Air Bag Module harness is open or shorted, Right Side Curtain 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: B1146 indicates Right Side Curtain Air Bag Module Short.
Common causes: Common causes include Faulty Right Side Curtain Air Bag Module, Right Side Curtain Air Bag Module harness is open or shorted, Right Side Curtain 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 2,524

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 Feb 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1146 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.
The Right Side Curtain Air Bag Module mainly consists of air bag and inflator which inflates the air bag.

OBDII Code B1146 - Right Side Curtain Air Bag Module Short - AutoCodes.com — B1146 Code - Right Side Curtain Air Bag Module Short

What does this mean?

What are the Possible Causes of the DTC B1146?

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

How to Fix the DTC B1146?

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 B1146 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 B1146 code?

Need more information on how to fix the B1146 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1146 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1146 Infiniti — Right Side Curtain Air Bag Module Short
B1146 Nissan — Right Side Curtain Air Bag Module Short

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 B1146 Code

1. What are the common symptoms of OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

The common symptoms include the airbag warning light illuminating on the dashboard, the airbag system not functioning properly, and the possibility of the airbag not deploying in the event of a collision.

2. What causes the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

This code is typically triggered by a short circuit in the wiring, a faulty curtain airbag module, or a poor connection within the airbag system.

3. How can I diagnose the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

Diagnosing this code usually involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring and connections related to the right side curtain airbag module, and testing the module for proper functionality.

4. Can I still drive my vehicle with the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the right side curtain airbag system, which is a crucial safety component in the event of a collision.

5. How can I repair the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

Repairing this code may involve repairing or replacing damaged wiring, addressing any poor connections, or replacing the right side curtain airbag module if it is faulty.

6. Is it safe to reset the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

Resetting the code without addressing the underlying issue is not recommended, as it may pose a safety risk by disabling or impairing the right side curtain airbag system.

7. Can a DIY enthusiast fix the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

While some basic diagnostic steps can be performed by DIY enthusiasts, addressing the root cause of the code and repairing the right side curtain airbag system may require specialized tools and expertise best handled by a professional technician.

8. How much does it cost to repair the OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

The cost of repairing this code can vary depending on the extent of the damage, the need for replacement parts, and labor costs. It is advisable to obtain a diagnosis and repair estimate from a qualified mechanic.

9. Will the OBDII code B1146 (Right Side Curtain Air Bag Module Short) affect my vehicle's safety rating?

Having unresolved airbag system issues, such as the B1146 code, can impact your vehicle's safety rating and potentially compromise occupant safety in the event of a collision. It is essential to address such codes promptly.

10. How often should I have the airbag system checked to prevent OBDII code B1146 (Right Side Curtain Air Bag Module Short)?

Regular maintenance and inspections, as recommended by the vehicle manufacturer, can help prevent issues like the B1146 code. It is advisable to have the airbag system checked during routine service visits or if you notice any warning signs.