AutoCodes – RAM – B1A20 RAM

B1A20 RAM Code - Vehicle Theft Security System Pre-Arm Timeout

Quick Answer

The Vehicle Theft Security System (VTSS) is designed to protect against whole vehicle theft and provide passive protection against unauthorized vehicle start up. Common causes include Faulty Vehicle Theft Security System, Faulty Controlled Area Network (CAN) Communication. 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: B1A20 RAM indicates Vehicle Theft Security System Pre-Arm Timeout.
Common causes: Common causes include Faulty Vehicle Theft Security System, Faulty Controlled Area Network (CAN) Communication.
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 520

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 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1A20 RAM Description

The Vehicle Theft Security System (VTSS) is designed to protect against whole vehicle theft and provide passive protection against unauthorized vehicle start up. If an invalid key is used to start the vehicle, the engine will cut out after two (2) seconds of running. In subsequent years there were various modules controlling the VTSS system. Wireless Ignition Node (WIN) controls the VTSS system. The Remote Keyless Entry (RKE) transmitter has been replaced with the Fob Integrated Key (FOBIK). The primary components of the system are the Wireless Ignition Node (WIN), FOB Integrated Key (FOBIK), and the Powertrain Control Module (PCM). The system monitors vehicle doors, ignition and liftgate action for any unauthorized operation (includes hood switch for Export). The OBDII sets if the Vehicle Theft Security System (VTSS) pre-arm sequence is interrupted within sixteen seconds after securing the vehicle.

OBDII Code B1A20 RAM - Vehicle Theft Security System Pre-Arm Timeout - AutoCodes.com — B1A20 RAM Code - Vehicle Theft Security System Pre-Arm Timeout

What does this mean?

What are the Possible Causes of the DTC B1A20 RAM?

Faulty Vehicle Theft Security System
Faulty Controlled Area Network (CAN) Communication

How to Fix the DTC B1A20 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 B1A20 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 B1A20 RAM Code

1. What are the common symptoms of OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Common symptoms include the vehicle's security system not arming properly, intermittent alarm activation, or the system not responding to key fob commands.

2. What can cause the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Potential causes can include a faulty security module, issues with the key fob signal reception, wiring problems, or a malfunctioning sensor in the security system.

3. How can I diagnose the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Diagnosing this code may involve using an OBDII scanner to retrieve the specific fault code, inspecting the security system components for damage, and testing the key fob functionality.

4. Can a DIY enthusiast repair the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- While some simple troubleshooting steps can be performed by DIY enthusiasts, resolving this code may require specialized equipment and expertise, making it advisable to consult a professional mechanic.

5. Are there any reset procedures for clearing the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Resetting the code may involve disconnecting the vehicle's battery for a few minutes to clear the system's memory. However, the underlying issue causing the code should still be addressed.

6. Is it safe to continue driving with the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- It is generally not recommended to drive with unresolved security system issues, as they can compromise the safety and security of the vehicle. It is best to address the problem promptly.

7. Can extreme weather conditions trigger the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Yes, extreme temperature fluctuations or exposure to moisture can sometimes affect the functionality of the security system components, leading to the triggering of this code.

8. How long does it typically take to repair the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- The repair time can vary depending on the exact cause of the issue. Simple fixes like replacing a faulty sensor may take a short time, while diagnosing complex wiring problems can be more time-consuming.

9. Can a low battery in the key fob trigger the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Yes, a weak or depleted battery in the key fob can sometimes lead to communication issues with the security system, resulting in error codes like B1A20 RAM being triggered.

10. Are there any preventive maintenance steps to avoid the OBDII code B1A20 RAM related to the Vehicle Theft Security System Pre-Arm Timeout?

- Regularly inspecting the key fob battery, keeping the security system components clean and well-maintained, and addressing any warning signs promptly can help prevent issues leading to this code.