Engine-Codes.com
Engine-Codes – Infiniti – B1086 Infiniti

B1086 Infiniti Code - Front Pre-Tensioner Left Open

Quick Answer

The B1086 Infiniti diagnostic trouble code indicates that there is an open circuit in the front pre-tensioner on the left side of the vehicle. Common causes include Faulty pre-tensioner mechanism, Wiring or connector issues, Impact or collision that damaged the pre-tensioner. 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
B1086 Infiniti indicates Front Pre-Tensioner Left Open.
Common causes
Common causes include Faulty pre-tensioner mechanism, Wiring or connector issues, Impact or collision that damaged the pre-tensioner.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1086 Infiniti Description

The B1086 Infiniti diagnostic trouble code indicates that there is an open circuit in the front pre-tensioner on the left side of the vehicle. The front pre-tensioner is a crucial component of the vehicle's safety system, as it is responsible for tightening the seatbelt in the event of a collision to reduce the risk of injury to the occupant. When this code is triggered, it means that the pre-tensioner on the left side is not functioning properly, which can compromise the effectiveness of the seatbelt system in the event of an accident. This issue should be addressed promptly to ensure the safety of the vehicle's occupants.

OBDII Code B1086 Infiniti - Front Pre-Tensioner Left Open
B1086 Infiniti Code - Front Pre-Tensioner Left Open

Common Causes of B1086 Infiniti

  1. Faulty pre-tensioner mechanism
  2. Wiring or connector issues
  3. Impact or collision that damaged the pre-tensioner
  4. Corrosion or water damage affecting the system
  5. Electrical issues such as blown fuses or relays

Symptoms of B1086 Infiniti

  1. Airbag warning light illuminated on the dashboard
  2. Seatbelt warning light activated
  3. Seatbelt not retracting properly
  4. Audible warning chime when driving
  5. Possible loss of power to pre-tensioner mechanism

How to Fix B1086 Infiniti

  1. Diagnose the specific cause of the open circuit in the front pre-tensioner
  2. Inspect wiring and connectors for damage or corrosion
  3. Replace the faulty pre-tensioner mechanism if necessary
  4. Reset the airbag system and clear the diagnostic trouble codes
  5. Test the pre-tensioner to ensure it is functioning properly

Cost to Fix B1086 Infiniti

The cost of repairing a front pre-tensioner left open code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair costs can range from $200 to $500, including parts and labor. However, it is recommended to get a detailed quote from a qualified mechanic or dealership to get an accurate estimate. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to shop around for the best prices.

Need more information about the B1086 Infiniti code?

Need more information on how to fix the B1086 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1086 Infiniti 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 B1086 Infiniti Code

1. What does the OBDII code B1086 mean on an Infiniti?

The code B1086 indicates a problem with the front pre-tensioner circuit on the driver's side, specifically pointing to an open circuit condition.

2. What symptoms might I notice if my Infiniti has triggered the B1086 code?

You might observe the airbag warning light illuminated on the dashboard. In the event of a collision, the front seat belts might not tighten as designed, potentially increasing the risk of injury.

3. What can cause the B1086 code to appear in an Infiniti?

Possible causes include a disconnected or damaged wiring harness, a faulty seat belt pre-tensioner, or issues within the airbag control unit.

4. How can I fix the B1086 code in my Infiniti?

To fix this issue, inspect the wiring and connectors for damage or disconnections. If the wiring is intact, the seat belt pre-tensioner may need to be replaced. It is also advised to check and possibly reset the airbag control module.

5. Is it safe to drive my Infiniti with the B1086 code?

Driving with this code is not recommended as it indicates a potential malfunction in the seat belt system, which could compromise passenger safety in a crash.

6. How do I diagnose the B1086 code in my Infiniti?

Diagnosing this code typically involves using a scan tool to read the fault code and examining the seat belt pre-tensioner circuit. Check for continuity and resistance in the circuit using a multimeter and inspect all related connectors and wiring.

7. What tools are needed to address a B1086 code?

You will need a diagnostic scan tool to read the code and clear it from the system after repairs. A multimeter is essential for testing electrical components, and basic hand tools may be needed to access and replace faulty parts.

8. Can ignoring the B1086 code lead to other problems in an Infiniti?

Ignoring this code can lead to further damage within the seat belt system and can compromise the overall effectiveness of the vehicle’s safety features in an accident.

9. What is the cost of repairing an Infiniti with the B1086 code?

The cost can vary widely depending on the specific repair needed. If only the wiring needs repair, costs can be relatively low. However, if the seat belt pre-tensioner or the airbag control unit needs replacement, the repair can be significantly more expensive.

10. How often do I need to check the seat belt pre-tensioner system in my Infiniti?

It is a good practice to have the seat belt system, including pre-tensioners, checked regularly as part of your vehicle’s routine maintenance. Typically, a thorough inspection during annual servicing should suffice unless issues are noticed.

Discuss the causes and fixes for B1086 Infiniti OBDII Code

Submit a New Comment

Code B1086 Infiniti comments

No comments found for this page.