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B1399 Ford Code - Personalised Key Synchronisation System Programming Failure

Quick Answer

The B1399 Ford diagnostic trouble code (DTC) refers to a Personalised Key Synchronisation System Programming Failure. Common causes include Faulty key fob battery, Key transponder issues, Communication error between key and vehicle. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1399 Ford indicates Personalised Key Synchronisation System Programming Failure.
Common causes
Common causes include Faulty key fob battery, Key transponder issues, Communication error between key and vehicle.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1399 Ford Description

The B1399 Ford diagnostic trouble code (DTC) refers to a Personalised Key Synchronisation System Programming Failure. This code indicates that there is a problem with the programming of the personalised key synchronisation system in the vehicle. The personalised key synchronisation system is a security feature that ensures only authorised keys can start the vehicle. When this system fails to program correctly, it can lead to issues with the vehicle's security and functionality.

OBDII Code B1399 Ford - Personalised Key Synchronisation System Programming Failure
B1399 Ford Code - Personalised Key Synchronisation System Programming Failure

Common Causes of B1399 Ford

  1. Faulty key fob battery
  2. Key transponder issues
  3. Communication error between key and vehicle
  4. Problems with the vehicle's computer system
  5. Faulty keyless entry system

Symptoms of B1399 Ford

  1. Engine cranks but does not start
  2. Keyless entry system not working
  3. Security light flashing on the dashboard
  4. Alarm system malfunctions
  5. Vehicle going into security lockout mode

How to Fix B1399 Ford

  1. Check and replace the key fob battery
  2. Reprogram the key fob and synchronise it with the vehicle
  3. Inspect and replace the key transponder if necessary
  4. Reset the vehicle's computer system
  5. Test the keyless entry system and ensure proper functionality

Cost to Fix B1399 Ford

The typical repair costs for addressing a B1399 Ford code can range from $100 to $300, depending on the specific cause of the issue and the extent of the repairs needed. This cost estimate includes parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1399 Ford Code

1. What are common symptoms of OBDII code B1399 Ford (Personalised Key Synchronisation System Programming Failure)?

- Common symptoms include issues with starting the vehicle, the engine not turning over, and the key not being recognized by the immobilizer system.

2. What can cause the OBDII code B1399 Ford to appear?

- This code is typically triggered when there is a failure in the programming of the personalized key synchronisation system, often due to a communication error between the key and the vehicle's immobilizer system.

3. How can I diagnose the OBDII code B1399 Ford?

- Diagnosing this code usually involves using a professional OBDII scanner to retrieve the specific error code from the vehicle's computer system. Additionally, checking the key fob battery and ensuring the key is properly synchronized with the immobilizer system can help diagnose the issue.

4. Can I repair the Personalised Key Synchronisation System Programming Failure on my own?

- While some basic troubleshooting steps can be taken, resolving this issue may require specialized equipment and knowledge. It is recommended to seek assistance from a professional automotive technician familiar with Ford vehicles.

5. Are there any DIY tips for resolving the B1399 Ford code?

- DIY tips for this code may include checking the key fob battery, ensuring the key is properly synchronized with the vehicle, and inspecting for any visible damage to the key or the immobilizer system components.

6. How critical is it to address the OBDII code B1399 Ford promptly?

- Addressing this code promptly is important to ensure the vehicle's immobilizer system functions correctly and to prevent potential issues with starting the vehicle or theft deterrent systems.

7. Can the B1399 Ford code be intermittent or a one-time occurrence?

- Yes, this code can sometimes be intermittent or a one-time occurrence, especially if there was a temporary communication error between the key and the vehicle's immobilizer system. However, it is still recommended to have the issue diagnosed and resolved.

8. What should I do if I encounter the Personalised Key Synchronisation System Programming Failure while driving?

- If this code appears while driving, it is advisable to safely pull over, turn off the vehicle, and attempt to restart it to see if the issue persists. If the problem continues, it is recommended to have the vehicle inspected by a professional technician.

9. How much does it typically cost to repair the B1399 Ford code?

- The cost of repairing this code can vary depending on the underlying cause of the issue and whether any parts need to be replaced. It is best to consult with a qualified mechanic for an accurate estimate.

10. Is there a way to prevent the OBDII code B1399 Ford from reoccurring?

- To help prevent this code from reoccurring, it is essential to ensure that the key fob battery is in good condition, the key is properly synchronized with the vehicle, and any potential issues with the immobilizer system are promptly addressed. Regular maintenance and inspection can also help prevent future occurrences.

Discuss the causes and fixes for B1399 Ford OBDII Code

Submit a New Comment

  • My car was running great. But went to start it in the afternoon and it wouldn't turn over and said the keyless fob wasn't detected. Even after using it (instead of my finger) to push the power button. After about 30 minutes the car was dead. I could even lock the doors dead. Had it towed and they replaced the battery. I just picked it up and it's running great but I used my FixIt detector and it says there is this B1399 code alert. There aren't (and never was) an engine light on to give my any forewarning.

    Reply to Comment

  • Some codes will trigger the engine light when the problem is consistent, but if problem only happen once, then the system will set the code but will not turn the engine light on. In your case the problem only happened once when the battery was low.

    Reply to Comment