AutoCodes – Chevrolet – U151B Chevrolet

U151B Chevrolet Code - Body Control Module Lost Communication With Sunroof Control Module On LIN Bus

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Sunroof Control Module, Sunroof Control Module harness is open or shorted, Sunroof 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: U151B Chevrolet indicates Body Control Module Lost Communication With Sunroof Control Module On LIN Bus.
Common causes: Common causes include Faulty Sunroof Control Module, Sunroof Control Module harness is open or shorted, Sunroof 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.

Save to My Repairs My Repairs

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

Code Popularity 6,642

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 03, 2020

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 U151B Chevrolet Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Body Control Module (BCM) from the Sunroof Control Module has not been received.

OBDII Code U151B Chevrolet - Body Control Module Lost Communication With Sunroof Control Module On LIN Bus - AutoCodes.com — U151B Chevrolet Code - Body Control Module Lost Communication With Sunroof Control Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U151B Chevrolet?

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

How to Fix the DTC U151B Chevrolet?

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 U151B Chevrolet 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 U151B Chevrolet code?

Need more information on how to fix the U151B Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U151B Chevrolet 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 U151B Chevrolet Code

1. What are the common symptoms of OBDII code U151B in a Chevrolet related to the Body Control Module losing communication with the Sunroof Control Module?

- Common symptoms include non-responsive sunroof operation, malfunctioning power windows, interior lights not working correctly, and potential issues with other electronic components controlled by the Body Control Module.

2. What are some possible causes of the U151B code in a Chevrolet indicating communication loss between the Body Control Module and the Sunroof Control Module?

- Possible causes may include a faulty sunroof control module, damaged wiring or connectors in the LIN bus communication system, a malfunctioning Body Control Module, or software communication errors.

3. How can I diagnose the U151B code in my Chevrolet when it suggests a communication problem between the Body Control Module and the Sunroof Control Module?

- Diagnose by checking the wiring and connectors for any visible damage, conducting a LIN bus communication test using a compatible diagnostic scanner, and inspecting both the Sunroof Control Module and Body Control Module for potential issues.

4. Are there any specific repair tips for resolving the U151B code related to the Body Control Module losing communication with the Sunroof Control Module in a Chevrolet?

- Some repair tips include ensuring all wiring and connectors are securely connected and undamaged, resetting the modules by disconnecting the battery for a few minutes, and updating the software for the affected modules if applicable.

5. Can the U151B code in a Chevrolet lead to any safety concerns or issues while driving?

- While the U151B code itself may not directly affect the drivability of the vehicle, it can lead to inconveniences such as non-functional sunroof operation or issues with other electronic components controlled by the Body Control Module.

6. Is it necessary to visit a dealership or mechanic to address the U151B code related to the Body Control Module losing communication with the Sunroof Control Module in a Chevrolet?

- Depending on your level of expertise and access to diagnostic tools, you may be able to address the U151B code yourself by checking wiring and connectors. However, complex issues or module replacements may require professional assistance.

7. How can I prevent the U151B code from reoccurring in my Chevrolet after repairing the communication issue between the Body Control Module and the Sunroof Control Module?

- To prevent recurrence, ensure all repairs are done correctly, perform regular maintenance checks on the vehicle's electronic systems, and address any related trouble codes promptly to avoid further communication issues between modules.

8. Does the U151B code in a Chevrolet always mean that the Sunroof Control Module is defective?

- The U151B code can be triggered by various factors, not just a defective Sunroof Control Module. It's essential to perform a thorough diagnostic to pinpoint the exact cause of the communication loss between modules.

9. Are there any recalls or technical service bulletins related to the U151B code and the communication between the Body Control Module and Sunroof Control Module in Chevrolet vehicles?

- It's recommended to check with Chevrolet dealerships or online databases for any relevant recalls or technical service bulletins related to the U151B code and communication issues between the Body Control Module and Sunroof Control Module.

10. Can the U151B code cause permanent damage to the Body Control Module or other electronic components in a Chevrolet?

- The U151B code itself may not cause permanent damage, but unresolved communication issues between modules can potentially lead to further electrical problems if left unaddressed. It's crucial to diagnose and repair the underlying cause promptly.