OBD Guide
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B2519

High Mount Stop Lamp Circuit Failure

B2519 is an OBD-II diagnostic trouble code meaning: High Mount Stop Lamp Circuit Failure. Common causes: burnt out brake light bulb, open or short circuit in wiring harness. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • Top mounted brake light not working
  • Check Engine Light Is On
  • Diagnostic scanner memory error

Causes

  • Burnt out brake light bulb
  • Open or short circuit in wiring harness
  • Oxidized or damaged contacts
  • Body Control Module (BCM) Malfunction

How to Fix

  1. Check the brake light bulb and replace if necessary
  2. Inspect the wiring harness for damage
  3. Clean connection contacts
  4. Check brake light circuit fuse
  5. Scan the BCM for additional errors

Related codes

B2520B2518

FAQ

What does the B2519 code mean?

B2519 is an OBD-II diagnostic trouble code that indicates: High Mount Stop Lamp Circuit Failure

What causes a B2519 error code?

The most common causes of B2519 include: Burnt out brake light bulb; Open or short circuit in wiring harness; Oxidized or damaged contacts; Body Control Module (BCM) Malfunction.

How do I fix a B2519 diagnostic trouble code?

To fix B2519: Check the brake light bulb and replace if necessary. Inspect the wiring harness for damage. Clean connection contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2519?

Do not drive — repair immediately

How much does it cost to fix B2519?

The estimated repair cost for B2519 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat