AutoCodes – Generic – B1186

B1186 Code - Open In Passenger Side Air Bag Second Stage Squib Circuit

Quick Answer

The Passenger Side Air Bag Second Stage Squib Circuit consists of the Air Bag Sensor Assembly and Passenger Side Air Bag Module. Common causes include Faulty Passenger Side Air Bag Second Stage Squib, Passenger Side Air Bag Second Stage Squib harness is open or shorted, Passenger Side Air Bag Second Stage Squib 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: B1186 indicates Open In Passenger Side Air Bag Second Stage Squib Circuit.
Common causes: Common causes include Faulty Passenger Side Air Bag Second Stage Squib, Passenger Side Air Bag Second Stage Squib harness is open or shorted, Passenger Side Air Bag Second Stage Squib 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 1,974

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 Feb 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1186 Description

The Passenger Side Air Bag Second Stage Squib Circuit consists of the Air Bag Sensor Assembly and Passenger Side Air Bag Module. The squib circuit causes the Passenger Side Air Bag to deploy when deployment conditions are satisfied.

OBDII Code B1186 - Open In Passenger Side Air Bag Second Stage Squib Circuit - AutoCodes.com — B1186 Code - Open In Passenger Side Air Bag Second Stage Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1186?

Faulty Passenger Side Air Bag Second Stage Squib
Passenger Side Air Bag Second Stage Squib harness is open or shorted
Passenger Side Air Bag Second Stage Squib circuit poor electrical connection
Faulty Air Bag Sensor Assembly

How to Fix the DTC B1186?

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 B1186 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 B1186 code?

Need more information on how to fix the B1186 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1186 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1186 Lexus — Open In Passenger Side Air Bag Second Stage Squib Circuit
B1186 Scion — Open In Passenger Side Air Bag Second Stage Squib Circuit
B1186 Toyota — Open In Passenger Side Air Bag Second Stage 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 B1186 Code

1. What are common symptoms of OBDII code B1186 (Open In Passenger Side Air Bag Second Stage Squib Circuit)?

The common symptoms include the airbag warning light illuminating on the dashboard and the airbag system being disabled.

2. What are the potential causes of OBDII code B1186?

The code B1186 can be caused by a faulty passenger side airbag second stage squib, damaged wiring or connectors in the circuit, or a problem with the airbag control module.

3. How can I diagnose the source of the issue related to OBDII code B1186?

You can diagnose the issue by using a diagnostic scanner to retrieve the fault codes, inspecting the wiring and connectors for damage, and conducting a continuity test on the passenger side airbag second stage squib.

4. Can I drive my vehicle with OBDII code B1186?

It is not recommended to drive the vehicle with an active B1186 code, as it indicates a potential issue with the passenger side airbag system, which could affect its deployment in the event of a collision.

5. How can I repair OBDII code B1186?

To repair the B1186 code, you may need to replace the passenger side airbag second stage squib, repair any damaged wiring or connectors in the circuit, or reprogram the airbag control module if necessary.

6. Is it safe to attempt to repair OBDII code B1186 on my own?

It is recommended to have the B1186 code diagnosed and repaired by a qualified automotive technician or a professional who has experience working with airbag systems, as improper handling can be dangerous.

7. Are there any safety precautions to consider when working on the airbag system related to OBDII code B1186?

When working on the airbag system, always disconnect the vehicle's battery and wait at least 10 minutes before starting any repair to avoid accidental airbag deployment.

8. Can OBDII code B1186 be intermittent?

Yes, the B1186 code can sometimes be intermittent, meaning the issue may come and go. It is essential to address the problem promptly, even if the symptoms disappear temporarily.

9. How much does it typically cost to repair OBDII code B1186?

The cost of repairing the B1186 code can vary depending on the cause of the issue, the required parts, and the labor rates of the repair shop. It's best to get a diagnostic and repair estimate from a trusted mechanic.

10. Will resetting the OBDII code B1186 make the problem go away?

Resetting the B1186 code may clear the fault temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and repair the root cause of the problem to ensure the safety of the airbag system.