B1087 - Front Pre-Tensioner Left Short

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B1087 Possible Causes

  • Faulty Front Pre-Tensioner Left
  • Front Pre-Tensioner Left harness is open or shorted
  • Front Pre-Tensioner Left circuit poor electrical connection

First diagnose B1087 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the B1087 code

    Labor: 1.0

    The cost of diagnosing the B1087 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

B1087 Possible Symptoms

  • Air Bag Warning Light ON

B1087 Meaning

In the case of a frontal collision that exceeds specified impact level, the diagnosis sensor unit detects the deceleration caused by the collision. If restrains the passenger with seat belt easing the stress on passengers chest with load limiter.

The restraint system for front seat occupant consists of the pre-tensioner mechanism and load limiter mechanism.

OBDII Code B1087 - Front Pre-Tensioner Left Short - Engine-Codes.com

B1087 More Information

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B1087 Information for specific makes

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.

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