AutoCodes – Ford – B1399 Ford

B1399 Ford Code - Personalised Key Synchronisation System Programming Failure

Quick Answer

When the Body Control Module (BCM) enters a key programming state, it activates the transceiver to read the key in the ignition key cylinder. Common causes include Passive Anti-Theft System (PATS) key not programmed, Faulty Body Control Module (BCM). 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 Passive Anti-Theft System (PATS) key not programmed, Faulty Body Control Module (BCM).
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.
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Code Popularity 13,782
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 19, 2019
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Code B1399 Ford Description

When the Body Control Module (BCM) enters a key programming state, it activates the transceiver to read the key in the ignition key cylinder. If a valid Passive Anti-Theft System (PATS) key is used and there are no concerns with PATS, the key is programmed into the BCM memory. The OBDII code sets when there is an unprogrammed PATS key
OBDII Code B1399 Ford - Personalised Key Synchronisation System Programming Failure - AutoCodes.com
B1399 Ford Code - Personalised Key Synchronisation System Programming Failure

What are the Possible Causes of the DTC B1399 Ford?

  • Passive Anti-Theft System (PATS) key not programmed
  • Faulty Body Control Module (BCM)

How to Fix the DTC B1399 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1399 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1399 Ford code?

Need more information on how to fix the B1399 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1399 Ford code diagnosed by a professional: Find a repair shop in your area

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

  • 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.

  • 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.

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