AutoCodes – Chevrolet – B291B 2017 Chevrolet Silverado

B291B 2017 Chevrolet Silverado Code - Content Theft Deterrent Sensor

Quick Answer

The Body Control Module (BCM) performs various communication fault detection tests to determine if a software, hardware, or communication concern exists with the ultrasonic intrusion sensor. Common causes include Faulty Content Theft Deterrent Sensor Module, Content Theft Deterrent Sensor Module harness is open or shorted, Content Theft Deterrent Sensor 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: B291B 2017 Chevrolet Silverado indicates Content Theft Deterrent Sensor.
Common causes: Common causes include Faulty Content Theft Deterrent Sensor Module, Content Theft Deterrent Sensor Module harness is open or shorted, Content Theft Deterrent Sensor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 334

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B291B 2017 Chevrolet Silverado Description

The Body Control Module (BCM) performs various communication fault detection tests to determine if a software, hardware, or communication concern exists with the ultrasonic intrusion sensor. The sensor being disconnected, a poor connection at the connector, or the vehicle battery being discharged could all cause the communication to be interrupted. This interruption stops the self-test from completing which causes Diagnostic Trouble Code (DTC) B291B. This is not because of the sensor failing, it is because of a previous or existing open connection between the sensor and the BCM. Restoring this connection and then arming the theft system will complete the test and allow the DTC to be cleared. The DTC will be set when the BCM cannot communicate with the ultrasonic intrusion sensor.

OBDII Code B291B 2017 Chevrolet Silverado - Content Theft Deterrent Sensor - AutoCodes.com — B291B 2017 Chevrolet Silverado Code - Content Theft Deterrent Sensor

What does this mean?

What are the Possible Causes of the DTC B291B 2017 Chevrolet Silverado?

Faulty Content Theft Deterrent Sensor Module
Content Theft Deterrent Sensor Module harness is open or shorted
Content Theft Deterrent Sensor Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B291B 2017 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 B291B 2017 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 B291B 2017 Chevrolet Silverado code?

Need more information on how to fix the B291B 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B291B 2017 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 B291B 2017 Chevrolet Silverado Code

1. What does the OBDII code B291B on a 2017 Chevrolet Silverado indicate?

The code B291B relates to the Content Theft Deterrent Sensor on the 2017 Chevrolet Silverado.

2. What are the common symptoms of a B291B code in a 2017 Chevrolet Silverado?

Common symptoms include issues with the vehicle's content theft deterrent system, such as false alarms or the system not functioning properly.

3. What are the possible causes of the B291B code in a 2017 Chevrolet Silverado?

Possible causes include a malfunctioning content theft deterrent sensor, wiring issues, or a faulty control module.

4. How can I diagnose the B291B code in my 2017 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, followed by inspecting the content theft deterrent sensor and related wiring for any visible damage.

5. Can I still drive my 2017 Chevrolet Silverado with a B291B trouble code?

While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the content theft deterrent system.

6. How can I repair the B291B code in my 2017 Chevrolet Silverado?

Repair options may include replacing the content theft deterrent sensor, repairing any damaged wiring, or resetting the control module after addressing the underlying issue.

7. Is it possible to reset the B291B trouble code in a 2017 Chevrolet Silverado without repairs?

Resetting the code without addressing the root cause may temporarily clear the error code, but it is likely to reappear if the underlying issue is not fixed.

8. Are there any DIY tips for troubleshooting the B291B code in a 2017 Chevrolet Silverado?

DIY tips may include checking the sensor connections for corrosion, ensuring the sensor is securely mounted, and inspecting the wiring for any visible damage.

9. How much does it typically cost to repair the B291B code in a 2017 Chevrolet Silverado?

The cost of repairs can vary depending on the extent of the issue, with expenses ranging from replacing a sensor or wiring harness to addressing control module malfunctions.

10. Can a B291B trouble code in a 2017 Chevrolet Silverado be indicative of other underlying problems?

While the B291B code specifically relates to the content theft deterrent sensor, it is essential to address this issue promptly to prevent any potential related complications with the vehicle's security system.