AutoCodes – Toyota – B1806 Toyota

B1806 Toyota Code - Open In Front Passenger Side Squib Circuit

Quick Answer

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted. 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: B1806 Toyota indicates Open In Front Passenger Side Squib Circuit.
Common causes: Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted.
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 40,911

How popular is this code, among other codes? Medium

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 Nov 27, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1806 Toyota Description

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. The circuit signals the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when the airbag sensor assembly detects an open circuit in the Front Passenger Side Squib Circuit for 0.5 seconds.

OBDII Code B1806 Toyota - Open In Front Passenger Side Squib Circuit - AutoCodes.com — B1806 Toyota Code - Open In Front Passenger Side Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1806 Toyota?

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

How to Fix the DTC B1806 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1806 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 B1806 Toyota code?

Need more information on how to fix the B1806 Toyota code? Get Access to Factory Service Manuals

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Information for Specific Toyota Models

B1806 2013 Toyota RAV4 — Open In Front Passenger Side Squib Circuit
B1806 2014 Toyota RAV4 — Open In Front Passenger Side Squib Circuit
B1806 2015 Toyota RAV4 — Open In Front Passenger Side Squib Circuit
B1806 2016 Toyota RAV4 — Open In Front Passenger Side Squib Circuit
B1806 2017 Toyota RAV4 — Open In Front Passenger Side Squib Circuit
B1806 2018 Toyota RAV4 — Open In Front Passenger Side Squib 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 B1806 Toyota Code

1. What are the common symptoms of OBDII code B1806 Toyota (Open In Front Passenger Side Squib Circuit)?

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

2. What are the possible causes of OBDII code B1806 Toyota?

- The code B1806 typically indicates an open circuit in the front passenger side airbag squib circuit, which could be caused by damaged wiring, faulty connections, or a defective airbag squib.

3. How can I diagnose the issue related to OBDII code B1806 Toyota?

- Diagnosing the issue involves using a diagnostic scanner to retrieve the fault code, inspecting the wiring and connections in the front passenger side airbag system, and testing the airbag squib for continuity.

4. Is it safe to drive with OBDII code B1806 Toyota present?

- It is not recommended to drive with the code B1806 active as it indicates a potential issue with the front passenger side airbag system, which could affect the safety of the vehicle occupants in the event of a collision.

5. Can I reset the OBDII code B1806 Toyota without fixing the underlying issue?

- Resetting the code without addressing the underlying issue will only temporarily turn off the warning light, but the code is likely to reappear until the root cause of the open circuit in the front passenger side squib circuit is resolved.

6. What are some repair tips for fixing OBDII code B1806 Toyota?

- Repair tips include carefully inspecting the wiring for damage, ensuring proper connections in the airbag system, and replacing the front passenger side airbag squib if it is found to be faulty.

7. How much does it typically cost to repair OBDII code B1806 Toyota?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to consult with a certified mechanic for an accurate estimate.

8. Are there any recalls or service bulletins related to OBDII code B1806 Toyota?

- It is advisable to check with Toyota or authorized dealerships for any recalls or service bulletins related to the B1806 diagnostic trouble code to see if there are any known issues or remedies provided by the manufacturer.

9. Can I fix OBDII code B1806 Toyota myself, or do I need to take it to a professional mechanic?

- While some DIY enthusiasts may have the skills to diagnose and repair the issue causing the B1806 code, it is recommended to seek assistance from a professional mechanic, especially when dealing with airbag systems for safety reasons.

10. Will fixing OBDII code B1806 Toyota require resetting the airbag system?

- Yes, after repairing the issue causing the B1806 code, the airbag system may need to be reset using a diagnostic scanner to clear the code and ensure proper functionality of the front passenger side airbag system.