AutoCodes – Toyota – B1868 Toyota

B1868 Toyota Code - Short To Positive 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: B1868 Toyota indicates Short To Positive 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 2,301

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 B1868 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 B1868 Toyota - Short To Positive In Front Passenger Side Knee Airbag Squib Circuit - AutoCodes.com — B1868 Toyota Code - Short To Positive In Front Passenger Side Knee Airbag Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1868 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 B1868 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 B1868 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 B1868 Toyota code?

Need more information on how to fix the B1868 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1868 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 B1868 Toyota Code

1. What are the common symptoms of OBDII code B1868 in a Toyota related to the front passenger side knee airbag squib circuit?

The common symptoms include an illuminated airbag warning light on the dashboard and a potential failure of the front passenger side knee airbag system.

2. What typically causes the OBDII code B1868 for a short to positive in the front passenger side knee airbag squib circuit in a Toyota?

This code is usually triggered by a short circuit to positive in the wiring or connectors associated with the front passenger side knee airbag squib circuit.

3. How can I diagnose the issue with the front passenger side knee airbag squib circuit if I encounter the OBDII code B1868 in my Toyota?

Diagnosis usually involves inspecting the wiring harness, connectors, and components associated with the front passenger side knee airbag squib circuit to identify and repair any short to positive conditions.

4. Is it safe to drive my Toyota with the OBDII code B1868 indicating a short to positive in the front passenger side knee airbag squib circuit?

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

5. Can I reset the OBDII code B1868 related to the front passenger side knee airbag squib circuit in my Toyota without fixing the underlying issue?

Resetting the code without addressing the root cause will likely result in the code reappearing once the system detects the ongoing short to positive condition.

6. Are there any specific repair tips for resolving the OBDII code B1868 in a Toyota due to a short to positive in the front passenger side knee airbag squib circuit?

Repair tips may include carefully inspecting the wiring for damage, repairing any short circuits, and ensuring proper connection of all components in the circuit.

7. How critical is it to address the OBDII code B1868 in a Toyota indicating a short to positive in the front passenger side knee airbag squib circuit?

Addressing this code promptly is crucial to ensure the proper functioning of the front passenger side knee airbag system in the event of an accident.

8. Can a DIY enthusiast without advanced automotive knowledge fix the OBDII code B1868 related to the front passenger side knee airbag squib circuit in a Toyota?

While some DIYers may be able to diagnose and repair simple wiring issues, dealing with airbag systems requires caution and expertise, so professional assistance is recommended.

9. Are there any recalls or service bulletins related to the OBDII code B1868 concerning a short to positive in the front passenger side knee airbag squib circuit in Toyota vehicles?

It's advisable to check with Toyota dealerships or the manufacturer's website for any recalls or service bulletins related to this specific OBDII code to see if there are known issues or remedies.

10. How can I prevent the recurrence of the OBDII code B1868 in my Toyota due to a short to positive in the front passenger side knee airbag squib circuit after repairing it?

Ensuring proper installation, maintenance, and regular inspections of the front passenger side knee airbag squib circuit components can help prevent the code from reappearing.