AutoCodes – Chevrolet – U0076 Chevrolet

U0076 Chevrolet Code - Control Module Communication Powertrain Sensor CAN Bus Off

Quick Answer

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. 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: U0076 Chevrolet indicates Control Module Communication Powertrain Sensor CAN Bus Off.
Common causes: Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
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 5,999

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 Jul 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0076 Chevrolet Description

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices when the ignition switch is in any position other than OFF. The object high-speed GMLAN serial data bus uses terminating resistors that are in parallel with the object high speed GMLAN (+) and (-) circuits. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U0076 Chevrolet - Control Module Communication Powertrain Sensor CAN Bus Off - AutoCodes.com — U0076 Chevrolet Code - Control Module Communication Powertrain Sensor CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U0076 Chevrolet?

Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U0076 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 U0076 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 U0076 Chevrolet code?

Need more information on how to fix the U0076 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0076 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U0076 2014 Chevrolet Silverado — Control Module Communication Powertrain Sensor CAN Bus Off
U0076 2015 Chevrolet Silverado — Control Module Communication Powertrain Sensor CAN Bus Off
U0076 2016 Chevrolet Silverado — Control Module Communication Powertrain Sensor CAN Bus Off
U0076 2017 Chevrolet Silverado — Control Module Communication Powertrain Sensor CAN Bus Off
U0076 2018 Chevrolet Silverado — Control Module Communication Powertrain Sensor CAN Bus Off

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 U0076 Chevrolet Code

1. What does the OBDII code U0076 for Chevrolet indicate?

The code U0076 signifies a communication problem related to the Powertrain Control Module (PCM) and the Controller Area Network (CAN) bus network for sensors in the powertrain system.

2. What are the common symptoms associated with the U0076 code?

Common symptoms include check engine light illumination, issues with engine performance, transmission problems, and potential stalling or rough idling.

3. What are the typical causes of the U0076 code in a Chevrolet vehicle?

The U0076 code can be triggered by issues such as damaged wiring or connectors in the CAN bus network, faulty PCM, problems with the CAN bus system, or a defective powertrain sensor.

4. How can I diagnose the U0076 code in my Chevrolet?

Diagnosing the U0076 code typically involves using an OBDII scanner to retrieve the code, checking the wiring and connectors in the CAN bus network, inspecting the powertrain sensors, and testing the PCM for any faults.

5. How do I repair the U0076 code in my Chevrolet?

Repairing the U0076 code may involve repairing or replacing damaged wiring and connectors, addressing any issues with the CAN bus system, replacing faulty powertrain sensors, or reprogramming the PCM.

6. Can I drive my Chevrolet with the U0076 code present?

It is not recommended to drive your vehicle with the U0076 code active, as it can lead to further damage to the powertrain system and potentially affect the safety and performance of the vehicle.

7. Is it possible to clear the U0076 code without addressing the underlying issue?

Clearing the U0076 code without resolving the root cause may temporarily turn off the check engine light, but the problem will likely resurface once the system detects the communication issue again.

8. How can I prevent the U0076 code from occurring in the future?

To prevent the U0076 code from reoccurring, it is essential to perform regular maintenance on your vehicle, address any wiring or sensor issues promptly, and ensure all connections in the CAN bus network are secure.

9. Is the U0076 code specific to Chevrolet vehicles?

While the U0076 code is commonly associated with Chevrolet vehicles, it can also appear in other makes and models that utilize the CAN bus network for powertrain sensor communication.

10. Can a DIY enthusiast fix the U0076 code issue, or is professional help required?

Depending on your experience and knowledge of automotive systems, you may be able to diagnose and repair the U0076 code yourself. However, if you are unsure or the issue seems complex, it is recommended to seek professional help for an accurate diagnosis and repair.