AutoCodes – Jeep – B1A24 Jeep

B1A24 Jeep Code - Key Not Programmed

Quick Answer

Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Ignition Node Module (IGNM), the Radio Frequency Hub (RF-Hub) performs a self test and resynchronization routine. Common causes include Fob-Integrated-Key (FOBIK) Not Programmed, Faulty Radio Frequency Hub (RF-Hub). 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: B1A24 Jeep indicates Key Not Programmed.
Common causes: Common causes include Fob-Integrated-Key (FOBIK) Not Programmed, Faulty Radio Frequency Hub (RF-Hub).
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,207

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1A24 Jeep Description

Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Ignition Node Module (IGNM), the Radio Frequency Hub (RF-Hub) performs a self test and resynchronization routine. During the routine, the RF-Hub interrogates the FOBIK, performing various validity and performance tests. The repair of this fault condition relies on the programmed status of the FOBIK. During interrogation, the FOBIK sends a low frequency (LF) signal to the RF-Hub that includes the FOBIK identification information. This Diagnostic Trouble Code (DTC) sets if the RF-Hub receives the default, secret key status from a FOBIK. Once set, this DTC will remain active until a valid, programmed FOBIK is inserted in the IGNM and rotated through the ON position.

OBDII Code B1A24 Jeep - Key Not Programmed - AutoCodes.com — B1A24 Jeep Code - Key Not Programmed

What does this mean?

What are the Possible Causes of the DTC B1A24 Jeep?

Fob-Integrated-Key (FOBIK) Not Programmed
Faulty Radio Frequency Hub (RF-Hub)

How to Fix the DTC B1A24 Jeep?

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 B1A24 Jeep 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 B1A24 Jeep code?

Need more information on how to fix the B1A24 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1A24 Jeep 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 B1A24 Jeep Code

1. What does OBDII code B1A24 for a Jeep mean?

The B1A24 code indicates that the vehicle's module has detected that the key is not programmed or recognized.

2. What are the common symptoms of OBDII code B1A24?

Common symptoms include the engine not starting, the ignition not turning, and a warning message on the instrument panel stating "Key Not Programmed."

3. What are the possible causes of OBDII code B1A24 in a Jeep?

The key fob battery may be dead, the key fob may be damaged, the key may need reprogramming, or there could be an issue with the vehicle's immobilizer system.

4. How can I troubleshoot OBDII code B1A24 on my Jeep?

Try replacing the key fob battery, inspecting the key for damage, and attempting to reprogram the key using the manufacturer's instructions. If the issue persists, consult a professional mechanic for further diagnosis.

5. Can I drive my Jeep with OBDII code B1A24?

If the engine starts and the vehicle is operational despite the warning message, you may be able to drive the Jeep. However, it is recommended to address the issue promptly to avoid any potential immobilization in the future.

6. Is it safe to clear the OBDII code B1A24 and reset the system?

Clearing the code may temporarily remove the warning message, but if the underlying issue is not resolved, the code will likely reappear. It is best to diagnose and fix the root cause of the problem to prevent further issues.

7. How much does it typically cost to repair OBDII code B1A24 on a Jeep?

The cost of repair can vary depending on the cause of the issue. Replacing a key fob battery is relatively inexpensive, while reprogramming a key or repairing the immobilizer system may be more costly. It is advisable to obtain quotes from reputable mechanics.

8. Can I reprogram the key myself to resolve OBDII code B1A24?

Attempting to reprogram the key yourself is possible if you have access to the correct instructions and equipment. However, if you are unsure or unsuccessful, it is best to seek professional assistance to avoid causing further issues.

9. Will OBDII code B1A24 cause any long-term damage to my Jeep?

The code itself does not typically cause long-term damage, but if the issue is not addressed promptly, it could lead to potential immobilization or security concerns in the future.

10. How can I prevent OBDII code B1A24 from occurring in the future?

Regularly checking the condition of your key fob, replacing the battery when necessary, and following proper key handling procedures can help prevent issues related to key programming and recognition.