AutoCodes – Toyota – B1861 2015 Toyota RAV4

B1861 2015 Toyota RAV4 Code - Open in Driver Side Knee Airbag Squib Circuit

Quick Answer

The Driver Side Knee Airbag Squib Circuit consists of the Center Airbag Sensor Assembly and the Driver Side Knee Airbag Assembly. Common causes include Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib), Driver Side Knee Airbag Assembly harness is open or shorted, Driver Side Knee Airbag Assembly 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: B1861 2015 Toyota RAV4 indicates Open in Driver Side Knee Airbag Squib Circuit.
Common causes: Common causes include Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib), Driver Side Knee Airbag Assembly harness is open or shorted, Driver Side Knee Airbag Assembly 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 254

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Dec 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1861 2015 Toyota RAV4 Description

The Driver Side Knee Airbag Squib Circuit consists of the Center Airbag Sensor Assembly and the Driver Side Knee Airbag Assembly. This circuit instructs the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected in the Driver Side Knee Airbag Squib Circuit.

OBDII Code B1861 2015 Toyota RAV4 - Open in Driver Side Knee Airbag Squib Circuit - AutoCodes.com — B1861 2015 Toyota RAV4 Code - Open in Driver Side Knee Airbag Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1861 2015 Toyota RAV4?

Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib)
Driver Side Knee Airbag Assembly harness is open or shorted
Driver Side Knee Airbag Assembly circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1861 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 B1861 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 B1861 2015 Toyota RAV4 code?

Need more information on how to fix the B1861 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1861 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 B1861 2015 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1861 on a 2015 Toyota RAV4?

The common symptoms include the airbag warning light illuminated on the dashboard and the possibility of the driver side knee airbag not deploying in the event of a crash.

2. What does the OBDII code B1861 for a 2015 Toyota RAV4 indicate?

OBDII code B1861 signifies an open in the driver side knee airbag squib circuit, which means there is a fault in the electrical circuit of the driver side knee airbag system.

3. What are the potential causes of an open in the driver side knee airbag squib circuit on a 2015 Toyota RAV4?

Possible causes include damaged wiring, a faulty knee airbag squib, a loose connection, or a malfunctioning airbag control module.

4. How can I diagnose the issue related to OBDII code B1861 on my 2015 Toyota RAV4?

Diagnosing the problem typically involves inspecting the wiring and connections in the driver side knee airbag circuit, checking the knee airbag squib for continuity, and using a scan tool to retrieve and clear the diagnostic trouble code.

5. Is it safe to drive my 2015 Toyota RAV4 with OBDII code B1861 present?

It's not recommended to drive the vehicle with an active airbag fault code, as it may affect the proper functioning of the driver side knee airbag in the event of a collision.

6. Can I repair the open in the driver side knee airbag squib circuit on my 2015 Toyota RAV4 myself?

While some DIY enthusiasts may attempt to address the issue, it's advisable to have the problem diagnosed and repaired by a qualified technician to ensure the safety and integrity of the airbag system.

7. How much does it typically cost to repair OBDII code B1861 on a 2015 Toyota RAV4?

The cost of repairing OBDII code B1861 can vary depending on the exact cause of the issue, but it may involve replacing damaged wiring, the knee airbag squib, or other components of the airbag system.

8. Will resetting the OBDII code B1861 on my 2015 Toyota RAV4 make the issue go away?

Resetting the code may temporarily clear the warning light, but if the underlying problem causing the open in the driver side knee airbag squib circuit is not addressed, the code is likely to reappear.

9. How important is it to fix OBDII code B1861 promptly on a 2015 Toyota RAV4?

Promptly addressing OBDII code B1861 is crucial for ensuring the proper functioning of the driver side knee airbag system, which is a crucial safety feature designed to protect occupants in the event of a crash.

10. Can a malfunctioning driver side knee airbag squib circuit affect other airbags in my 2015 Toyota RAV4?

While the driver side knee airbag squib circuit issue may not directly impact other airbags, it's essential to address the problem promptly to maintain the overall effectiveness and safety of the vehicle's airbag system.