AutoCodes – Toyota – B1908 Toyota

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

Quick Answer

The Front Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Left (LH). Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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: B1908 Toyota indicates Short to Positive in Front Pretensioner Squib Left Circuit.
Common causes: Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,137

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 Dec 07, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1908 Toyota Description

The Front Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Left (LH). This circuit instructs the Supplemental Restraint System (SRS) to deploy when the deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when a malfunction is detected in the Front Pretensioner Squib Left Circuit.

OBDII Code B1908 Toyota - Short to Positive in Front Pretensioner Squib Left Circuit - AutoCodes.com — B1908 Toyota Code - Short to Positive in Front Pretensioner Squib Left Circuit

What does this mean?

What are the Possible Causes of the DTC B1908 Toyota?

Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left)
Front Seat Outer Belt Assembly Left is open or shorted
Front Seat Outer Belt Assembly Left poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1908 Toyota?

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 B1908 Toyota 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 B1908 Toyota code?

Need more information on how to fix the B1908 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1908 Toyota code diagnosed by a professional: Find a repair shop in your area

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.