B0087 high Severity

B0087: Third Row Center Seatbelt Load Limiter Deployment Control (Subfault)

No direct impact on engine or drivability, but safety restraint system may not function during a crash

Overview

B0087 is a body system DTC indicating a fault in the control of the third‑row center seatbelt load limiter deployment, potentially disabling proper load limiter function and affecting SRS safety systems

Common Symptoms

  • Airbag/SRS warning light on instrument cluster
  • Seatbelt reminder light or chime for third‑row center seatbelt
  • Persistent fault code on scan even after reset
  • Load limiter may not release tension during simulated crash test

Most Common Causes

Faulty load limiter control circuit or actuator medium

Corrosion, broken wires, connector fatigue interrupt BCM signal

Poor wiring or connector issues in third‑row center seatbelt harness high

Loose, open, or shorted wiring can prevent correct signal transmission

Body Control Module (BCM) software or internal hardware failure medium

Software timing errors or internal damage can cause false triggers

Improper aftermarket modifications to seatbelt system low

Non‑OEM parts or pretensioner kits altering electrical parameters

Diagnostic Steps

  1. Connect a BCM‑compatible OBD2 scan tool and retrieve DTCs
    Expected: B0087 code present in the body/SRS system with no unrelated codes
    Interpretation: Confirms primary fault for load limiter control
  2. Visually inspect third‑row center seatbelt harness, connectors, and terminals
    Expected: No corrosion, broken wires, or loose connectors
    Interpretation: Identifies obvious harness or connector faults
  3. Perform continuity and resistance tests between BCM and load limiter actuator
    Expected: Circuit resistance within manufacturer specified range
    Interpretation: Open/shorted circuits indicate wiring issues
  4. Update BCM software and re‑scan
    Expected: Code clears and stays cleared if software issue fixed
    Interpretation: Confirms software timing error as cause
  5. Replace load limiter actuator or BCM if previous tests fail
    Expected: Proper system behavior and no B0087 on re‑scan
    Interpretation: Fault isolated to hardware component

Repair Solutions

Repair or replace damaged wiring/connectors medium
Estimated Cost: $50 - $300

Cleaning and securing connections often resolves many faults

Update BCM software to latest manufacturer version easy
Estimated Cost: $80 - $150

Requires dealer or advanced scan tool programming

Replace third‑row center seatbelt load limiter actuator medium
Estimated Cost: $150 - $500

Part costs vary by make/model

Replace Body Control Module (BCM) hard
Estimated Cost: $400 - $900

Requires VIN‑matched module and professional programming

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • General airbag sensor fault codes incorrectly attributed instead of seatbelt load limiter control

Frequently Asked Questions

Can you explain the meaning of B0087?

Third Row Center Seatbelt Load Limiter Deployment Control (Subfault) is the standard definition for B0087. This diagnostic code is triggered when the ECU detects a problem in the Sensors.

Is it safe to drive with a B0087 code?

You should treat B0087 as a high issue. No direct impact on engine or drivability, but safety restraint system may not function during a crash

Common signs of the B0087 error code

You may experience the following: Airbag/SRS warning light on instrument cluster, Seatbelt reminder light or chime for third‑row center seatbelt, Persistent fault code on scan even after reset.

Common triggers for the B0087 error

Potential culprits include: Faulty load limiter control circuit or actuator, Poor wiring or connector issues in third‑row center seatbelt harness, Body Control Module (BCM) software or internal hardware failure. A proper diagnosis is recommended.

How much does it cost to fix B0087?

It depends on what needs to be fixed. Update BCM software to latest manufacturer version repairs are cheaper (~$150), while Replace Body Control Module (BCM) repairs are on the higher end (~$900).

What cars are affected by the B0087 code?

The B0087 code is a generic powertrain code, meaning it applies to almost all makes and models, such as Honda, Toyota, VW, Ford, and Chevy.

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