AutoCodesToyota – B1906 2015 Toyota RAV4

B1906 2015 Toyota RAV4 Code - Open 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
B1906 2015 Toyota RAV4 indicates Open 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.
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Code Popularity 403
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 07, 2022
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Code B1906 2015 Toyota RAV4 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 B1906 2015 Toyota RAV4 - Open in Front Pretensioner Squib Left Circuit - AutoCodes.com
B1906 2015 Toyota RAV4 Code - Open in Front Pretensioner Squib Left Circuit

What are the Possible Causes of the DTC B1906 2015 Toyota RAV4?

  • 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 B1906 2015 Toyota RAV4?

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 B1906 2015 Toyota RAV4 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 B1906 2015 Toyota RAV4 code?

Need more information on how to fix the B1906 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1906 2015 Toyota RAV4 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 B1906 2015 Toyota RAV4 Code

1. What does the OBDII code B1906 mean on a 2015 Toyota RAV4?

The code B1906 indicates an open circuit in the front left pretensioner squib, which is part of the vehicle's airbag and safety restraint system.

2. What are the symptoms of the B1906 code in a 2015 Toyota RAV4?

The primary symptom is the illumination of the airbag warning light on the dashboard, and the safety restraint system may not function properly.

3. What causes the B1906 code to appear?

Common causes include damaged or disconnected wiring, a faulty pretensioner, a defective clock spring, or issues with the airbag control module.

4. Can I still drive my 2015 Toyota RAV4 if the B1906 code is present?

While the vehicle is drivable, the airbag and seatbelt pretensioner systems may not work in an accident, posing a safety risk.

5. How do I diagnose the B1906 code in a 2015 Toyota RAV4?

Diagnosis typically involves inspecting the wiring and connectors for damage, testing the pretensioner resistance, and using a scan tool to read airbag system data.

6. How can I fix the B1906 code in my 2015 Toyota RAV4?

Repairs may include replacing damaged wiring, reconnecting loose connectors, replacing the pretensioner, or, in some cases, replacing the airbag control module.

7. How much does it cost to fix the B1906 code on a 2015 Toyota RAV4?

The cost can vary widely, ranging from $50 to $500 or more, depending on whether it's a simple wiring repair or a component replacement.

8. Can the B1906 code be cleared without repairing the issue?

The code can be cleared with a scan tool, but it will likely reappear unless the underlying problem is resolved.

9. What tools are needed to repair the B1906 code in a Toyota RAV4?

You may need a multimeter, a scan tool with airbag system capabilities, and basic hand tools for inspecting wiring and connectors.

10. Should I attempt to fix the B1906 code myself?

If you're experienced with automotive electrical systems, you can try, but due to the airbag system's complexity and safety risks, professional repair is recommended.

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