AutoCodes – Infiniti – B1201 Infiniti

B1201 Infiniti Code - Left Side Front Curtain Air Bag Module Short

Quick Answer

The Air Bag Sensor Unit (Air Bag Control Module) monitors the Left Side Front Curtain Air Bag Module. Common causes include Faulty Left Side Front Curtain Air Bag Module, Left Side Front Curtain Air Bag Module harness is open or shorted, Left Side Front 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: B1201 Infiniti indicates Left Side Front Curtain Air Bag Module Short.
Common causes: Common causes include Faulty Left Side Front Curtain Air Bag Module, Left Side Front Curtain Air Bag Module harness is open or shorted, Left Side Front 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 1,172

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 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1201 Infiniti Description

The Air Bag Sensor Unit (Air Bag Control Module) monitors the Left Side Front Curtain Air Bag Module. The Air Bag Sensor Unit sets the OBDII code when the circuit for the front Left Side Front Curtain Air Bag Module circuit t is shorted to some power supply circuits.

OBDII Code B1201 Infiniti - Left Side Front Curtain Air Bag Module Short - AutoCodes.com — B1201 Infiniti Code - Left Side Front Curtain Air Bag Module Short

What does this mean?

What are the Possible Causes of the DTC B1201 Infiniti?

Faulty Left Side Front Curtain Air Bag Module
Left Side Front Curtain Air Bag Module harness is open or shorted
Left Side Front Curtain Air Bag Module circuit poor electrical connection
Faulty Air Bag Sensor Unit (Air Bag Control Module)

How to Fix the DTC B1201 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1201 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 B1201 Infiniti code?

Need more information on how to fix the B1201 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1201 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 B1201 Infiniti Code

1. What are the common symptoms of OBDII code B1201 in an Infiniti related to the Left Side Front Curtain Air Bag Module Short?

- Common symptoms include the airbag warning light illuminating on the dashboard, the airbag system not deploying properly in the event of a collision, and diagnostic trouble codes stored in the vehicle's computer.

2. What are the possible causes of OBDII code B1201 indicating a Left Side Front Curtain Air Bag Module Short in an Infiniti?

- The code B1201 can be triggered by a short circuit in the wiring harness, a faulty airbag module, a loose connection in the airbag system, or water damage to the airbag components.

3. How serious is OBDII code B1201 in an Infiniti indicating a Left Side Front Curtain Air Bag Module Short?

- This code is serious as it involves the airbag system, which is a critical safety feature designed to protect occupants in the event of a collision. It is important to address this issue promptly to ensure the airbags function correctly.

4. Can I continue driving my Infiniti with OBDII code B1201 related to the Left Side Front 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 airbag system. Driving with a malfunctioning airbag system can compromise occupant safety in the event of a crash.

5. How can OBDII code B1201 in an Infiniti indicating a Left Side Front Curtain Air Bag Module Short be diagnosed?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble codes, inspecting the wiring and connectors in the airbag system, and testing the airbag module and related components for faults.

6. What are some repair tips for addressing OBDII code B1201 in an Infiniti related to the Left Side Front Curtain Air Bag Module Short?

- Repair tips may include checking and repairing any damaged wiring, ensuring all connections are secure, replacing the faulty airbag module if necessary, and clearing the trouble codes from the vehicle's computer.

7. Can resetting the OBDII system clear the B1201 code indicating a Left Side Front Curtain Air Bag Module Short in an Infiniti?

- While clearing the trouble codes may temporarily turn off the warning light, it is important to address the underlying issue causing the code to prevent future safety risks. Simply resetting the system without fixing the problem is not a recommended solution.

8. Are there any safety precautions to take when working on the airbag system to resolve OBDII code B1201 in an Infiniti?

- When working on the airbag system, it is crucial to disconnect the vehicle's battery and wait at least 10 minutes before starting any repairs to prevent accidental airbag deployment. It is also recommended to follow manufacturer's safety guidelines.

9. How much does it typically cost to repair OBDII code B1201 related to the Left Side Front Curtain Air Bag Module Short in an Infiniti?

- The cost of repairs can vary depending on the root cause of the issue, the extent of the damage, and whether any components need to be replaced. It is advisable to consult a professional mechanic for an accurate estimate.

10. Is it possible to prevent OBDII code B1201 from occurring in an Infiniti related to the Left Side Front Curtain Air Bag Module Short?

- While some causes of this code may be unavoidable, regular maintenance and inspections of the airbag system can help detect potential issues early and prevent more serious malfunctions.