B1908 Toyota Code - Short to Positive in Front Pretensioner Squib Left Circuit

Quick Answer

The B1908 diagnostic trouble code for Toyota vehicles indicates a "Short to Positive in Front Pretensioner Squib Left Circuit." This code is related to the front left seatbelt pretensioner system, which is a crucial safety feature designed to tighten the seatbelt in the event of a collision, reducing the risk of injury to the occupant. Common causes include Damaged wiring or connectors in the front left seatbelt pretensioner circuit, A faulty front pretensioner squib, Issues with the airbag control 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

B1908 Toyota indicates Short to Positive in Front Pretensioner Squib Left Circuit.

Common causes

Common causes include Damaged wiring or connectors in the front left seatbelt pretensioner circuit, A faulty front pretensioner squib, Issues with the airbag control 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.

• Description
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• Symptoms
• How To Fix
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Common Causes of B1908 Toyota

Symptoms of B1908 Toyota

How to Fix B1908 Toyota

Cost to Fix B1908 Toyota

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Information for Specific Toyota Models

• B1908 2013 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit
• B1908 2014 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit
• B1908 2015 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit
• B1908 2016 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit
• B1908 2017 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit
• B1908 2018 Toyota RAV4 — Short to Positive in Front Pretensioner Squib Left Circuit

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 B1908 Toyota Code

1. What are common symptoms of OBDII code B1908 Toyota?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the front left airbag during a collision.

2. What does the OBDII code B1908 Toyota indicate?

- The code indicates a Short to Positive in Front Pretensioner Squib Left Circuit, meaning there is an electrical issue in the front left airbag system.

3. What are possible causes of OBDII code B1908 Toyota?

- Possible causes include a short circuit in the wiring, a faulty pretensioner squib in the front left seatbelt, or a malfunction in the airbag control module.

4. How can I diagnose the OBDII code B1908 Toyota?

- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors in the front left airbag system, and testing the pretensioner squib for continuity.

5. Is it safe to drive with OBDII code B1908 Toyota active?

- It is not recommended to drive with this code active as it signifies a potential issue with the front left airbag system, which may compromise safety in the event of a collision.

6. How can OBDII code B1908 Toyota be repaired?

- Repair may involve repairing or replacing damaged wiring, replacing the front left seatbelt pretensioner squib, or reprogramming the airbag control module to clear the code.

7. Can I reset the OBDII code B1908 Toyota on my own?

- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Will fixing OBDII code B1908 Toyota require professional help?

- Depending on your automotive knowledge and skills, you may be able to address the issue yourself, but it is recommended to seek help from a qualified mechanic for proper diagnosis and repair.

9. Are there any safety precautions to take when working on OBDII code B1908 Toyota?

- When working on airbag systems, always disconnect the vehicle's battery and wait for at least 10 minutes to allow the system to discharge to prevent accidental deployment.

10. How can I prevent OBDII code B1908 Toyota from occurring again in the future?

- Regularly inspecting the airbag system components, ensuring proper wiring connections, and addressing any issues promptly can help prevent the recurrence of this OBDII code.