OBD Guide
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B1924

Air Bag Internal Diagnostic Monitor Fault or System Disarm Fault

B1924 is an OBD-II diagnostic trouble code meaning: Air Bag Internal Diagnostic Monitor Fault or System Disarm Fault. Common causes: malfunction of the airbag control unit, damage to the harness for the passive restraint system. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Airbag light is on
  • The passive safety system can be disabled
  • Lack of system response in case of accident

Causes

  • Malfunction of the airbag control unit
  • Damage to the harness for the passive restraint system
  • Problems with squibs
  • Short circuit in the airbag circuit
  • Incorrect system maintenance

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness
  3. Check the condition of the squibs
  4. Test the airbag control unit
  5. If necessary, replace faulty components
  6. Reset errors and check the system

Related codes

B1920B1921B1922B1923B1925

FAQ

What does the B1924 code mean?

B1924 is an OBD-II diagnostic trouble code that indicates: Air Bag Internal Diagnostic Monitor Fault or System Disarm Fault

What causes a B1924 error code?

The most common causes of B1924 include: Malfunction of the airbag control unit; Damage to the harness for the passive restraint system; Problems with squibs; Short circuit in the airbag circuit.

How do I fix a B1924 diagnostic trouble code?

To fix B1924: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness. Check the condition of the squibs. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1924?

Do not drive — repair immediately

How much does it cost to fix B1924?

The estimated repair cost for B1924 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat