AutoCodes – Toyota – B1865 Toyota

B1865 Toyota Code - Short In Front Passenger Side Knee Airbag Squib Circuit

Quick Answer

The Front Passenger Side Knee Airbag Squib Circuit consists of the Airbag Sensor Assembly and the Front Passenger Side Knee Airbag Assembly. Common causes include Faulty Front Passenger Side Knee Airbag Assembly (Front Passenger Side Knee Squib), Front Passenger Side Knee Airbag Assembly harness is open or shorted, Front Passenger 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: B1865 Toyota indicates Short In Front Passenger Side Knee Airbag Squib Circuit.
Common causes: Common causes include Faulty Front Passenger Side Knee Airbag Assembly (Front Passenger Side Knee Squib), Front Passenger Side Knee Airbag Assembly harness is open or shorted, Front Passenger 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 5,868

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 Jul 10, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1865 Toyota Description

The Front Passenger Side Knee Airbag Squib Circuit consists of the Airbag Sensor Assembly and the Front Passenger Side Knee Airbag Assembly. The 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 Front Passenger Side Knee Airbag Squib Circuit.

OBDII Code B1865 Toyota - Short In Front Passenger Side Knee Airbag Squib Circuit - AutoCodes.com — B1865 Toyota Code - Short In Front Passenger Side Knee Airbag Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1865 Toyota?

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

How to Fix the DTC B1865 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 B1865 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 B1865 Toyota code?

Need more information on how to fix the B1865 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1865 Toyota 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 B1865 Toyota Code

1. What are common symptoms of OBDII code B1865 in a Toyota related to a short in the front passenger side knee airbag squib circuit?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the front passenger side knee airbag during a collision.

2. What are possible causes of OBDII code B1865 in a Toyota indicating a short in the front passenger side knee airbag squib circuit?

- Causes may include damaged wiring, a faulty knee airbag squib circuit, a loose connection, or a malfunctioning airbag control module.

3. How can I diagnose OBDII code B1865 related to a short in the front passenger side knee airbag squib circuit in a Toyota?

- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, inspecting the wiring and connections for damage, and testing the knee airbag squib circuit for continuity.

4. Can I still drive my Toyota with OBDII code B1865 indicating a short in the front passenger side knee airbag squib circuit?

- It is not recommended to drive the vehicle with this code present, as it may compromise the proper functioning of the front passenger side knee airbag in the event of a collision.

5. What are the repair options for fixing OBDII code B1865 in a Toyota with a short in the front passenger side knee airbag squib circuit?

- Repair options may include repairing or replacing damaged wiring, addressing any loose connections, replacing the knee airbag squib circuit if necessary, or recalibrating the airbag control module.

6. Is it safe to reset the OBDII code B1865 without addressing the underlying issue in a Toyota?

- Resetting the code without addressing the underlying issue is not recommended, as it may lead to a potential safety hazard by not ensuring the proper functioning of the front passenger side knee airbag.

7. How much does it typically cost to repair OBDII code B1865 related to a short in the front passenger side knee airbag squib circuit in a Toyota?

- Repair costs can vary depending on the specific cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can a DIY enthusiast fix OBDII code B1865 in a Toyota on their own?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, addressing the underlying issue of a short in the front passenger side knee airbag squib circuit often requires specialized knowledge and tools best handled by a professional technician.

9. How long does it typically take to repair OBDII code B1865 related to a short in the front passenger side knee airbag squib circuit in a Toyota?

- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a full day to complete the necessary repairs.

10. Are there any safety precautions to take when working on OBDII code B1865 in a Toyota related to the front passenger side knee airbag squib circuit?

- It is crucial to disconnect the vehicle's battery before working on any airbag-related components to prevent accidental deployment and ensure safety during the repair process.