AutoCodes – Generic – B1148

B1148 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: B1148 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 8,066

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 B1148 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 B1148 - Right Side Curtain Air Bag Module Short - AutoCodes.com — B1148 Code - Right Side Curtain Air Bag Module Short

What does this mean?

What are the Possible Causes of the DTC B1148?

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 B1148?

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 B1148 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 B1148 code?

Need more information on how to fix the B1148 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1148 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1148 Buick — Passenger Side Air Bag System Malfunction
B1148 Cadillac — Passenger Side Air Bag System Malfunction
B1148 Chevrolet — Passenger Side Air Bag System Malfunction
B1148 GMC — Passenger Side Air Bag System Malfunction
B1148 Infiniti — Right Side Curtain Air Bag Module Short
B1148 Lexus — Front Airbag Sensor RH Circuit Malfunction
B1148 Nissan — Right Side Curtain Air Bag Module Short
B1148 Scion — Front Airbag Sensor RH Circuit Malfunction
B1148 Toyota — Front Airbag Sensor RH Circuit Malfunction

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 B1148 Code

1. What are the common symptoms of OBDII code B1148 (Right Side Curtain Air Bag Module Short)?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the right side curtain airbag during an accident.

2. What are the possible causes of OBDII code B1148?

- The code B1148 can be triggered by a short circuit in the right side curtain airbag module, a faulty airbag module, damaged wiring, or a malfunctioning airbag control module.

3. How can I diagnose the cause of OBDII code B1148?

- Diagnosing the cause of code B1148 typically involves using a professional OBDII scanner to retrieve the specific error code, inspecting the wiring and connectors related to the right side curtain airbag module, and conducting continuity tests to identify any short circuits.

4. Is it safe to drive with OBDII code B1148 present?

- It is not recommended to drive with OBDII code B1148 present, as it indicates a potential issue with the right side curtain airbag system, which may affect its functionality during an accident.

5. How can I repair OBDII code B1148 (Right Side Curtain Air Bag Module Short)?

- Repairing OBDII code B1148 involves addressing the underlying cause, which may include replacing the right side curtain airbag module, repairing damaged wiring, or resetting the airbag control module.

6. Can I reset OBDII code B1148 without fixing the issue?

- Resetting the code without addressing the underlying cause will only temporarily clear the error code. The issue triggering the code will need to be resolved to prevent it from reoccurring.

7. How much does it cost to repair OBDII code B1148?

- The cost of repairing OBDII code B1148 can vary depending on the root cause of the issue, the components that need to be replaced, and labor costs. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Will disconnecting the battery reset OBDII code B1148?

- Disconnecting the battery may temporarily clear the error code, but it will likely reappear if the underlying issue is not addressed. It is best to diagnose and repair the cause of the code to prevent it from returning.

9. Are there any safety concerns associated with OBDII code B1148?

- OBDII code B1148 indicates a potential issue with the right side curtain airbag system, which could affect its deployment in the event of a collision. It is crucial to address this code promptly to ensure the airbag system functions correctly.

10. Can I fix OBDII code B1148 myself, or do I need a professional mechanic?

- Repairing OBDII code B1148 may require specialized tools and knowledge of airbag systems. It is recommended to consult with a professional mechanic or automotive technician to properly diagnose and repair the issue.