B0687
Security System Indicator Circuit Low
B0687 is an OBD-II diagnostic trouble code meaning: Security System Indicator Circuit Low. Common causes: open or short circuit in the indicator wiring harness, malfunction of the security indicator itself. Estimated repair cost: $56–167.
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
- Check the wiring harness for breaks or damage
- Check the security indicator on the dashboard
- Check connectors and contacts for corrosion or damage
- Scan the SRS control unit for other errors
- If necessary, replace the indicator or wiring harness
Related codes
Error B0687 by Vehicle Brand
FAQ
What does the B0687 code mean?
B0687 is an OBD-II diagnostic trouble code that indicates: Security System Indicator Circuit Low
What causes a B0687 error code?
The most common causes of B0687 include: 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 do I fix a B0687 diagnostic trouble code?
To fix B0687: Check the wiring harness for breaks or damage. Check the security indicator on the dashboard. Check connectors and contacts for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0687?
Do not drive — repair immediately
How much does it cost to fix B0687?
The estimated repair cost for B0687 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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