AutoCodes – RAM – B1A6C RAM

B1A6C RAM 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 RAM 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 929

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

What does this mean?

What are the Possible Causes of the DTC B1A6C RAM?

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

How to Fix the DTC B1A6C RAM?

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 RAM 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 RAM Code

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

- Common symptoms include the engine not starting, security light on the dashboard illuminated, and the vehicle going into a security lockout mode.

2. What are the potential causes of the B1A6C RAM code?

- The B1A6C RAM code is typically caused by a mismatch between the secret key stored in the vehicle's security module and the key being used to start the engine.

3. How can I diagnose the B1A6C RAM code?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking for other related security system trouble codes, and performing a key reprogramming procedure if necessary.

4. Can I drive my vehicle with the B1A6C RAM code present?

- It is not recommended to drive the vehicle with the B1A6C RAM code present, as it may lead to the engine not starting or being locked out by the security system.

5. How can I repair the B1A6C RAM code?

- Repairing the B1A6C RAM code often involves reprogramming or replacing the key, reprogramming the security module, or seeking assistance from a qualified automotive locksmith or dealership.

6. Can a DIY enthusiast fix the B1A6C RAM code at home?

- While some DIY enthusiasts may be able to attempt key reprogramming procedures at home, dealing with security system issues like the B1A6C RAM code often requires specialized equipment and expertise best handled by professionals.

7. Will disconnecting the battery reset the B1A6C RAM code?

- Disconnecting the battery may temporarily clear the code, but it is unlikely to resolve the underlying issue causing the Secret Key Mismatch. It is recommended to diagnose and address the root cause of the code.

8. How common is the B1A6C RAM code in vehicles?

- The B1A6C RAM code is relatively uncommon but can occur in vehicles equipped with advanced security systems that utilize keyless entry and key fobs.

9. Can extreme weather conditions trigger the B1A6C RAM code?

- Extreme weather conditions can potentially affect the key fob's signal transmission or the vehicle's security module, leading to a Secret Key Mismatch and triggering the B1A6C RAM code.

10. What should I do if the B1A6C RAM code keeps recurring?

- If the B1A6C RAM code keeps recurring after attempted repairs, it is advisable to have the vehicle thoroughly inspected by a professional technician to diagnose any underlying issues causing the Secret Key Mismatch.