AutoCodes – Chevrolet – U179A 2016 Chevrolet Silverado

U179A 2016 Chevrolet Silverado Code - Lost Communication with Hybrid/EV Powertrain Control Module 2

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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: U179A 2016 Chevrolet Silverado indicates Lost Communication with Hybrid/EV Powertrain Control Module 2.
Common causes: Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 229

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 21, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U179A 2016 Chevrolet Silverado Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices in turn set a DTC associated with the loss of state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC.

OBDII Code U179A 2016 Chevrolet Silverado - Lost Communication with Hybrid/EV Powertrain Control Module 2 - AutoCodes.com — U179A 2016 Chevrolet Silverado Code - Lost Communication with Hybrid/EV Powertrain Control Module 2

What does this mean?

What are the Possible Causes of the DTC U179A 2016 Chevrolet Silverado?

Faulty Hybrid/EV Powertrain Control Module 2
Hybrid/EV Powertrain Control Module 2 harness is open or shorted
Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection

How to Fix the DTC U179A 2016 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 U179A 2016 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 U179A 2016 Chevrolet Silverado code?

Need more information on how to fix the U179A 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 U179A 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U179A in a 2016 Chevrolet Silverado?

- Common symptoms include loss of power, decrease in fuel efficiency, and potential issues with the hybrid or electric powertrain system.

2. What does the OBDII code U179A (Lost Communication with Hybrid/EV Powertrain Control Module 2) in a 2016 Chevrolet Silverado indicate?

- This code indicates a communication problem between the vehicle's onboard diagnostic system and the Hybrid/EV Powertrain Control Module 2.

3. What are some possible causes of the U179A code in a 2016 Chevrolet Silverado?

- Possible causes include damaged wiring, loose connections, faulty control module, software issues, or issues with the hybrid or electric powertrain system.

4. How can I diagnose the U179A code in my 2016 Chevrolet Silverado?

- Diagnosing this code typically involves checking the wiring connections, inspecting for any physical damage, and using a diagnostic scanner to communicate with the Control Module 2.

5. Is it safe to continue driving my 2016 Chevrolet Silverado with the U179A code?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further issues with the powertrain system and potentially cause safety concerns.

6. Can I reset the U179A code in my 2016 Chevrolet Silverado on my own?

- While you can attempt to clear the code using an OBDII scanner, it is important to address the underlying cause of the code to prevent it from reoccurring.

7. How much does it typically cost to repair the U179A code in a 2016 Chevrolet Silverado?

- The cost of repairs can vary depending on the exact cause of the code, but it may involve replacing damaged wiring, repairing connections, or even replacing the Control Module 2.

8. Are there any DIY repair tips for addressing the U179A code in a 2016 Chevrolet Silverado?

- DIY repair tips may include checking and securing wiring connections, inspecting for physical damage, and ensuring all components related to the powertrain system are functioning properly.

9. How long does it usually take to repair the U179A code in a 2016 Chevrolet Silverado?

- The repair time can vary based on the specific cause of the code and the complexity of the repair process, but it may take a few hours to a full day to address the issue.

10. Can the U179A code in a 2016 Chevrolet Silverado be a recurring problem?

- If the underlying cause of the code is not properly addressed, it can reoccur in the future. It is crucial to diagnose and repair the issue to prevent it from happening again.