OBD Guide
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C15AB

Lock Mechanism Insertion Malfunction

C15AB is an OBD-II diagnostic trouble code meaning: Lock Mechanism Insertion Malfunction. Common causes: mechanical damage to the locking mechanism, wiring harness problems. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system fault indicator is on
  • Problems with the operation of belt pretensioners
  • Airbag malfunction

Causes

  • Mechanical damage to the locking mechanism
  • Wiring Harness Problems
  • Malfunction of sensors of the passive safety system
  • Short circuit in the circuit

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness
  3. Inspect the locking mechanism for damage
  4. Replace faulty components
  5. Reset the error and check if it returns

Related codes

B00A0B00A1B00A2

FAQ

What does the C15AB code mean?

C15AB is an OBD-II diagnostic trouble code that indicates: Lock Mechanism Insertion Malfunction

What causes a C15AB error code?

The most common causes of C15AB include: Mechanical damage to the locking mechanism; Wiring Harness Problems; Malfunction of sensors of the passive safety system; Short circuit in the circuit.

How do I fix a C15AB diagnostic trouble code?

To fix C15AB: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness. Inspect the locking mechanism for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C15AB?

Do not drive — repair immediately

How much does it cost to fix C15AB?

The estimated repair cost for C15AB is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat