AutoCodes – Generic – B1A6C

B1A6C 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 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 5,043

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

What does this mean?

What are the Possible Causes of the DTC B1A6C?

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

How to Fix the DTC B1A6C?

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 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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Information for Specific Makes

B1A6C Chrysler — Secret Key Mismatch
B1A6C Dodge — Secret Key Mismatch
B1A6C Jeep — Secret Key Mismatch
B1A6C RAM — Secret Key Mismatch

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 Code

1. What are the common symptoms of OBDII code B1A6C (Secret Key Mismatch)?

The common symptoms of OBDII code B1A6C include issues with starting the vehicle, security light illumination on the dashboard, and the engine not turning over.

2. What causes the OBDII code B1A6C (Secret Key Mismatch) to trigger?

The OBDII code B1A6C is triggered when there is a communication mismatch between the secret key stored in the vehicle's security system and the key being used to start the engine.

3. How can I diagnose the OBDII code B1A6C (Secret Key Mismatch)?

Diagnosing the OBDII code B1A6C may require using a professional OBDII scanner to read the code and investigate the key programming and security system of the vehicle.

4. Can I repair the OBDII code B1A6C (Secret Key Mismatch) on my own?

Repairing the OBDII code B1A6C may require professional assistance from a qualified mechanic who can reprogram the keys or address any issues with the vehicle's security system.

5. Are there any DIY tips to troubleshoot the OBDII code B1A6C (Secret Key Mismatch)?

Some DIY tips to troubleshoot the OBDII code B1A6C include checking the battery of the key fob, ensuring the key is inserted correctly, and verifying the vehicle's security system settings.

6. Is it safe to continue driving with the OBDII code B1A6C (Secret Key Mismatch) present?

It is not recommended to continue driving with the OBDII code B1A6C present as it may lead to potential security risks or further issues with starting the vehicle.

7. How much does it cost to repair the OBDII code B1A6C (Secret Key Mismatch)?

The cost to repair the OBDII code B1A6C can vary depending on the specific issue, but it may involve reprogramming the keys or addressing the vehicle's security system, which can range from moderate to expensive.

8. Can the OBDII code B1A6C (Secret Key Mismatch) be a false alarm?

While it is possible for the OBDII code B1A6C to be triggered by a temporary communication error, it is essential to investigate the issue further to ensure the vehicle's security system is functioning correctly.

9. Will resetting the OBDII code B1A6C (Secret Key Mismatch) make it go away permanently?

Resetting the OBDII code B1A6C may temporarily clear the code, but if the underlying issue with the secret key mismatch is not addressed, the code is likely to reappear.

10. Can a locksmith help with resolving the OBDII code B1A6C (Secret Key Mismatch)?

Locksmiths with expertise in automotive key programming may be able to assist in resolving the OBDII code B1A6C by reprogramming keys or addressing issues related to the vehicle's security system.