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B1089 Infiniti Code - Front Pre-Tensioner Left Short

Quick Answer

The B1089 code for Infiniti vehicles indicates a problem with the front pre-tensioner on the left side of the vehicle. Common causes include Wiring issues, such as a short circuit or damaged wiring harness, Faulty pre-tensioner unit, Corrosion or poor connections in the electrical system. 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
B1089 Infiniti indicates Front Pre-Tensioner Left Short.
Common causes
Common causes include Wiring issues, such as a short circuit or damaged wiring harness, Faulty pre-tensioner unit, Corrosion or poor connections in the electrical system.
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 16, 2024
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Code B1089 Infiniti Description

The B1089 code for Infiniti vehicles indicates a problem with the front pre-tensioner on the left side of the vehicle. Pre-tensioners are safety devices that work in conjunction with airbags to tighten the seatbelt in the event of a collision, reducing the risk of injury to the occupants. A short in the pre-tensioner system can prevent it from functioning properly, potentially compromising the effectiveness of the seatbelt in a crash.

OBDII Code B1089 Infiniti - Front Pre-Tensioner Left Short
B1089 Infiniti Code - Front Pre-Tensioner Left Short

Common Causes of B1089 Infiniti

  1. Wiring issues, such as a short circuit or damaged wiring harness.
  2. Faulty pre-tensioner unit.
  3. Corrosion or poor connections in the electrical system.
  4. Impact or collision that damaged the pre-tensioner system.
  5. Manufacturing defect in the pre-tensioner component.

Symptoms of B1089 Infiniti

  1. Airbag warning light illuminated on the dashboard.
  2. Seatbelt not tightening properly during sudden stops or impacts.
  3. Audible warning chime indicating a fault in the airbag system.
  4. Diagnostic trouble code (DTC) B1089 stored in the vehicle's computer system.

How to Fix B1089 Infiniti

  1. Begin by diagnosing the specific cause of the B1089 code using a diagnostic scan tool to pinpoint the issue.
  2. Inspect the wiring harness and connections for any damage, corrosion, or loose connections. Repair or replace any faulty wiring.
  3. Test the pre-tensioner unit to determine if it is functioning correctly. Replace the pre-tensioner if it is found to be faulty.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues that were not initially apparent.

Cost to Fix B1089 Infiniti

The cost of repairing a B1089 code on an Infiniti vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of replacing a faulty pre-tensioner unit can range from $200 to $500, including parts and labor. Additional costs may be incurred if wiring repairs or diagnostic testing are needed. It is recommended to consult with a qualified mechanic or dealership to obtain an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary, so it's advisable to shop around for the best price.

Need more information about the B1089 Infiniti code?

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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 B1089 Infiniti Code

1. What does OBDII code B1089 for Infiniti Front Pre-Tensioner Left Short mean?

This code indicates a problem with the front pre-tensioner on the left side of the vehicle, specifically a short circuit.

2. What are the common symptoms of OBDII code B1089 in an Infiniti?

Common symptoms may include the airbag warning light staying illuminated on the dashboard, the airbag system not functioning properly, and potential issues with the vehicle's safety features.

3. What are possible causes of OBDII code B1089 in an Infiniti?

Possible causes include damaged wiring or connectors in the front pre-tensioner system, a faulty pre-tensioner unit, or issues with the airbag control module.

4. How serious is OBDII code B1089 for an Infiniti vehicle?

This code is related to the safety system of the vehicle, so it should be taken seriously. It is important to address this issue promptly to ensure the proper functioning of the airbag system in the event of a collision.

5. Can I continue driving my Infiniti with OBDII code B1089 present?

It is not recommended to drive the vehicle with this code present, as it may indicate a problem with the airbag system, which is a critical safety feature in the vehicle.

6. Is it possible to repair OBDII code B1089 in an Infiniti on my own?

While it is possible to diagnose and repair some electrical issues yourself, dealing with airbag systems can be complex and dangerous. It is recommended to have a professional technician address this code.

7. How can I diagnose OBDII code B1089 in my Infiniti?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring and connectors in the front pre-tensioner system, and testing the components for proper functionality.

8. What are some repair tips for fixing OBDII code B1089 in an Infiniti?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty pre-tensioner unit if necessary, and resetting the airbag system after the repair.

9. How much does it cost to fix OBDII code B1089 in an Infiniti?

The cost of repairing this code can vary depending on the underlying issue and the labor rates of the repair shop. It is recommended to get a diagnostic and repair estimate from a qualified technician.

10. Can resetting the OBDII system clear the B1089 code in an Infiniti?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and repair the root cause of the problem.

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