AutoCodes – Chevrolet – B2955 2014 Chevrolet Silverado

B2955 2014 Chevrolet Silverado Code - Security Sensor Data Circuit Malfunction

Quick Answer

When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the key is energized by the exciter coil surrounding the ignition lock cylinder. Common causes include Faulty Immobilizer Control Module, Immobilizer Control Module harness is open or shorted, Immobilizer Control Module circuit poor electrical connection. 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: B2955 2014 Chevrolet Silverado indicates Security Sensor Data Circuit Malfunction.
Common causes: Common causes include Faulty Immobilizer Control Module, Immobilizer Control Module harness is open or shorted, Immobilizer Control Module circuit poor electrical connection.
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 542

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 Jun 01, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2955 2014 Chevrolet Silverado Description

When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the key is energized by the exciter coil surrounding the ignition lock cylinder. The transponder transmits a signal to the Immobilizer Control Module. The Immobilizer Control Module translates this signal to a serial data message which is sent to the Body Control Module (BCM). The BCM then compares this value to a value stored in memory. If the value is correct, the BCM will send the prerelease password via the serial data circuit to the Engine Control Module (ECM). If the learned key code does not match or a transponder value is not received, the BCM will send the start disable password to the ECM. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a circuit fault on the immobilizer antenna circuits.

OBDII Code B2955 2014 Chevrolet Silverado - Security Sensor Data Circuit Malfunction - AutoCodes.com — B2955 2014 Chevrolet Silverado Code - Security Sensor Data Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B2955 2014 Chevrolet Silverado?

Faulty Immobilizer Control Module
Immobilizer Control Module harness is open or shorted
Immobilizer Control Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2955 2014 Chevrolet Silverado?

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 B2955 2014 Chevrolet Silverado 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 B2955 2014 Chevrolet Silverado code?

Need more information on how to fix the B2955 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2955 2014 Chevrolet Silverado 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 B2955 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B2955 on a 2014 Chevrolet Silverado?

- Common symptoms include the security light staying on, difficulty starting the vehicle, and issues with the vehicle's anti-theft system.

2. What can cause the OBDII code B2955 (Security Sensor Data Circuit Malfunction) on a 2014 Chevrolet Silverado?

- Possible causes include a faulty security sensor, damaged wiring in the security system, or a malfunctioning control module.

3. How can I diagnose the Security Sensor Data Circuit Malfunction on my 2014 Chevrolet Silverado?

- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, checking the wiring and connections related to the security system, and testing the security sensor.

4. Can I still drive my 2014 Chevrolet Silverado with the B2955 code present?

- It's not recommended to drive the vehicle with this code present, as it may lead to potential security issues or problems with starting the vehicle.

5. How can I reset the B2955 code on my 2014 Chevrolet Silverado?

- Resetting the code usually involves fixing the underlying issue causing the malfunction, clearing the code with a scan tool, and ensuring the problem doesn't recur.

6. Is it possible to repair the Security Sensor Data Circuit Malfunction on a 2014 Chevrolet Silverado without professional help?

- While some basic troubleshooting can be done by DIY enthusiasts, complex issues related to the security system may require professional diagnosis and repair.

7. What are some tips for preventing the recurrence of the B2955 code on a 2014 Chevrolet Silverado?

- Regularly inspecting the security system components, keeping the connections clean and secure, and addressing any issues promptly can help prevent the code from reappearing.

8. Can a weak car battery cause the B2955 code on a 2014 Chevrolet Silverado?

- A weak or failing car battery can potentially trigger electrical issues that may lead to the Security Sensor Data Circuit Malfunction code.

9. Will disconnecting the car battery reset the B2955 code on a 2014 Chevrolet Silverado?

- Disconnecting the battery may clear the code temporarily, but it's essential to address and fix the underlying problem to prevent the code from returning.

10. How much does it typically cost to repair the Security Sensor Data Circuit Malfunction on a 2014 Chevrolet Silverado?

- The cost of repair can vary based on the specific issue causing the code, but it's advisable to consult a professional for an accurate diagnosis and cost estimate.