OBD Guide
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B1087

Front Pre-Tensioner Left Short

B1087 is an OBD-II diagnostic trouble code meaning: Front Pre-Tensioner Left Short. Common causes: damage to the wiring harness in the pretensioner area, short circuit in the pretensioner itself. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • The SRS system may disable the pretensioner
  • Possible malfunctions of other passive safety components

Causes

  • Damage to the wiring harness in the pretensioner area
  • Short circuit in the pretensioner itself
  • Problems with the SRS control unit
  • Corrosion of contacts or connectors

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Check the integrity of the wiring harness to the pretensioner
  3. Measure the resistance in the pretensioner circuit
  4. Replace damaged wires or connectors
  5. If necessary, replace the pretensioner
  6. Reset errors and check system operation

Related codes

B1088B1086B1085

FAQ

What does the B1087 code mean?

B1087 is an OBD-II diagnostic trouble code that indicates: Front Pre-Tensioner Left Short

What causes a B1087 error code?

The most common causes of B1087 include: Damage to the wiring harness in the pretensioner area; Short circuit in the pretensioner itself; Problems with the SRS control unit; Corrosion of contacts or connectors.

How do I fix a B1087 diagnostic trouble code?

To fix B1087: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness to the pretensioner. Measure the resistance in the pretensioner circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1087?

Do not drive — repair immediately

How much does it cost to fix B1087?

The estimated repair cost for B1087 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat