OBD Guide

B0687

Security System Indicator Circuit Low

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

Symptoms

  • The security light on the dashboard is on or flashing
  • The security system may not work in an emergency
  • Possible problems starting the engine (in some models)

Causes

  • Open or short circuit in the indicator wiring harness
  • Malfunction of the security indicator itself
  • Problems with the safety system control unit (SRS)
  • Corrosion or poor contact in connectors

How to Fix

  1. Check the wiring harness for breaks or damage
  2. Check the security indicator on the dashboard
  3. Check connectors and contacts for corrosion or damage
  4. Scan the SRS control unit for other errors
  5. If necessary, replace the indicator or wiring harness

Related codes

Error B0687 by Vehicle Brand