AutoCodes – Jeep – B1A6C Jeep

B1A6C Jeep Code - Secret Key Mismatch

Quick Answer

Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Wireless Ignition Node (WIN) basestation, the WIN performs a self test and resynchronization routine. Common causes include Faulty Fob-Integrated-Key (FOBIK), Faulty Wireless Ignition Node (WIN). 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: B1A6C Jeep indicates Secret Key Mismatch.
Common causes: Common causes include Faulty Fob-Integrated-Key (FOBIK), Faulty Wireless Ignition Node (WIN).
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 1,359

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 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1A6C Jeep Description

Whenever a Fob-Integrated-Key (FOBIK) is inserted in the Wireless Ignition Node (WIN) basestation, the WIN performs a self test and resynchronization routine. During the routine, the WIN interrogates the FOBIK for the secret key information and start the vehicle. The repair of this fault condition relies on whether the current secret key in the FOBIK is recognized by the WIN. During interrogation, the FOBIK sends a low frequency (LF) signal to the WIN that includes the current secret key.
This Diagnostic Trouble Code (DTC) sets if the WIN receives a secret key ID from the FOBIK that is not the correct secret key value stored in the WIN. This DTC will remain active until a valid, programmed FOBIK, with the correct secret key is inserted in the basestation and rotated through the ON position.

OBDII Code B1A6C Jeep - Secret Key Mismatch - AutoCodes.com — B1A6C Jeep Code - Secret Key Mismatch

What does this mean?

What are the Possible Causes of the DTC B1A6C Jeep?

Faulty Fob-Integrated-Key (FOBIK)
Faulty Wireless Ignition Node (WIN)

How to Fix the DTC B1A6C 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 B1A6C 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.

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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 B1A6C Jeep Code

1. What are the common symptoms of OBDII code B1A6C "Secret Key Mismatch" in a Jeep?

- The common symptoms include difficulty starting the vehicle, the engine not turning over, and the security light staying illuminated on the dashboard.

2. What does the OBDII code B1A6C "Secret Key Mismatch" indicate in a Jeep?

- This code indicates that there is a mismatch between the electronic key and the security system, preventing the vehicle from starting.

3. What are the possible causes of the B1A6C code "Secret Key Mismatch" in a Jeep?

- The possible causes include a faulty key fob, a malfunctioning immobilizer system, a weak car battery, or issues with the ignition switch.

4. How can I diagnose the OBDII code B1A6C "Secret Key Mismatch" in my Jeep?

- Diagnosing this code typically requires specialized diagnostic tools that can communicate with the vehicle's security system to identify the root cause of the mismatch.

5. Can I repair the OBDII code B1A6C "Secret Key Mismatch" issue in my Jeep myself?

- While some simple troubleshooting steps like checking the key fob battery or ensuring the key is programmed correctly can be done at home, resolving complex issues may require professional assistance.

6. Is it safe to continue driving my Jeep with the OBDII code B1A6C "Secret Key Mismatch" present?

- It is not recommended to drive the vehicle with this code active, as it can lead to potential starting issues and may leave you stranded if the problem worsens.

7. How much does it typically cost to repair the OBDII code B1A6C "Secret Key Mismatch" in a Jeep?

- The cost of repair can vary depending on the underlying cause, but it may involve reprogramming the key fob, replacing the immobilizer system components, or addressing other related issues.

8. Can resetting the OBDII system clear the B1A6C "Secret Key Mismatch" code in my Jeep?

- Resetting the OBDII system may temporarily clear the code, but it is important to address the root cause of the mismatch to prevent the issue from recurring.

9. Are there any preventive measures to avoid encountering the B1A6C "Secret Key Mismatch" code in my Jeep?

- Keeping the key fob in good condition, regularly checking the car battery, and following proper key programming procedures can help prevent this code from appearing.

10. How long does it take to repair the OBDII code B1A6C "Secret Key Mismatch" issue in a Jeep?

- The repair time can vary based on the complexity of the problem and the availability of parts, but it is advisable to consult a professional technician for an accurate estimate.