OBD Guide
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B1399

Personalised Key Synchronisation System Programming Failure

B1399 is an OBD-II diagnostic trouble code meaning: Personalised Key Synchronisation System Programming Failure. Common causes: immobilizer module malfunction, damage to the ignition key. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Inability to start the engine
  • Immobilizer indicator flashing
  • The key is not recognized by the system

Causes

  • Immobilizer module malfunction
  • Damage to the ignition key
  • Wiring Harness Problems
  • Software glitches

How to Fix

  1. Check the ignition key for damage
  2. Diagnose the immobilizer module
  3. Check wiring harness and connections
  4. Reprogram the key using dealer equipment

Related codes

B1400B1398

FAQ

What does the B1399 code mean?

B1399 is an OBD-II diagnostic trouble code that indicates: Personalised Key Synchronisation System Programming Failure

What causes a B1399 error code?

The most common causes of B1399 include: Immobilizer module malfunction; Damage to the ignition key; Wiring Harness Problems; Software glitches.

How do I fix a B1399 diagnostic trouble code?

To fix B1399: Check the ignition key for damage. Diagnose the immobilizer module. Check wiring harness and connections. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1399?

Yes, but get it checked soon

How much does it cost to fix B1399?

The estimated repair cost for B1399 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat