OBD Guide
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B1A3D

Siren Battery Tamper/Loss Of Power

B1A3D is an OBD-II diagnostic trouble code meaning: Siren Battery Tamper/Loss Of Power. Common causes: broken siren power supply circuit, siren malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Alarm siren does not work
  • The alarm does not sound
  • False alarms

Causes

  • Broken siren power supply circuit
  • Siren malfunction
  • Wiring harness damage
  • Dead siren battery
  • Problems with the alarm module

How to Fix

  1. Check the integrity of the siren power circuit
  2. Check the condition of the wiring harness
  3. Test the siren for functionality
  4. Replace the siren if necessary
  5. Check and replace siren battery

Related codes

B1A3CB1A3E

FAQ

What does the B1A3D code mean?

B1A3D is an OBD-II diagnostic trouble code that indicates: Siren Battery Tamper/Loss Of Power

What causes a B1A3D error code?

The most common causes of B1A3D include: Broken siren power supply circuit; Siren malfunction; Wiring harness damage; Dead siren battery.

How do I fix a B1A3D diagnostic trouble code?

To fix B1A3D: Check the integrity of the siren power circuit. Check the condition of the wiring harness. Test the siren for functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1A3D?

Limited driving only, diagnose soon

How much does it cost to fix B1A3D?

The estimated repair cost for B1A3D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat