B1086 Infiniti Code - Front Pre-Tensioner Left Open
Quick Answer
In the case of a frontal collision that exceeds specified impact level, the diagnosis sensor unit detects the deceleration caused by the collision. Common causes include Faulty Front Pre-Tensioner Left, Front Pre-Tensioner Left harness is open or shorted, Front Pre-Tensioner Left 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
- B1086 Infiniti indicates Front Pre-Tensioner Left Open.
- Common causes
- Common causes include Faulty Front Pre-Tensioner Left, Front Pre-Tensioner Left harness is open or shorted, Front Pre-Tensioner Left 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.
Code B1086 Infiniti Description
The restraint system for front seat occupant consists of the pre-tensioner mechanism and load limiter mechanism.
What are the Possible Causes of the DTC B1086 Infiniti?
- Faulty Front Pre-Tensioner Left
- Front Pre-Tensioner Left harness is open or shorted
- Front Pre-Tensioner Left circuit poor electrical connection
How to Fix the DTC B1086 Infiniti?
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 B1086 Infiniti 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.
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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.
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.
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