AutoCodes – Chevrolet – U179C Chevrolet

U179C Chevrolet Code - Lost Communication with One or More Hybrid/EV Battery Interface Control Modules

Quick Answer

The Hybrid/EV Powertrain Control Module 2 communicates with the Hybrid/EV Battery Interface Control Modules via a dedicated bus inside the Hybrid/EV Battery Pack assembly. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface 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: U179C Chevrolet indicates Lost Communication with One or More Hybrid/EV Battery Interface Control Modules.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface 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 573

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 21, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U179C Chevrolet Description

The Hybrid/EV Powertrain Control Module 2 communicates with the Hybrid/EV Battery Interface Control Modules via a dedicated bus inside the Hybrid/EV Battery Pack assembly. This dedicated bus does not communicate with the scan tool. The Diagnostic Trouble Code (DTC) will be set when the Hybrid/EV Powertrain Control Module has received too many transmit errors on the dedicated serial data circuits.

OBDII Code U179C Chevrolet - Lost Communication with One or More Hybrid/EV Battery Interface Control Modules - AutoCodes.com — U179C Chevrolet Code - Lost Communication with One or More Hybrid/EV Battery Interface Control Modules

What does this mean?

What are the Possible Causes of the DTC U179C Chevrolet?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC U179C 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 U179C 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 U179C Chevrolet code?

Need more information on how to fix the U179C Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U179C Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U179C 2014 Chevrolet Silverado — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
U179C 2015 Chevrolet Silverado — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
U179C 2016 Chevrolet Silverado — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
U179C 2017 Chevrolet Silverado — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
U179C 2018 Chevrolet Silverado — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules

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 U179C Chevrolet Code

1. What are common symptoms of the OBDII code U179C in a Chevrolet related to lost communication with hybrid/EV battery interface control modules?

- Common symptoms include the hybrid/EV system not working properly, reduced fuel efficiency, and warning lights on the dashboard.

2. What are some possible causes of the U179C code in a Chevrolet indicating lost communication with hybrid/EV battery interface control modules?

- Possible causes include damaged wiring, faulty connectors, issues with the battery interface control modules, or a malfunction in the hybrid/EV system.

3. How can I diagnose the U179C code in a Chevrolet related to lost communication with hybrid/EV battery interface control modules?

- Diagnosing this code typically involves checking the wiring and connectors for any visible damage, testing the battery interface control modules, and using a diagnostic scanner to retrieve specific trouble codes.

4. Are there any repair tips for fixing the U179C code in a Chevrolet due to lost communication with hybrid/EV battery interface control modules?

- Repair tips may include repairing or replacing damaged wiring, ensuring connectors are securely connected, resetting the hybrid/EV system, or seeking professional help for complex issues.

5. Can the U179C code in a Chevrolet indicating lost communication with hybrid/EV battery interface control modules be reset without repairs?

- While clearing the trouble code may temporarily turn off the warning lights, it is important to address the underlying issue causing the code to prevent further problems with the hybrid/EV system.

6. Is it safe to continue driving a Chevrolet with the U179C code related to lost communication with hybrid/EV battery interface control modules?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential issues with the hybrid/EV system and affect the overall performance of the vehicle.

7. How can I prevent the U179C code in a Chevrolet from reoccurring after repairs?

- To prevent the code from reoccurring, it is essential to perform regular maintenance on the hybrid/EV system, address any underlying issues promptly, and follow manufacturer recommendations for the vehicle.

8. Are there any specific tools or equipment needed to diagnose and repair the U179C code in a Chevrolet?

- Using a diagnostic scanner compatible with the Chevrolet's OBDII system, multimeter for testing electrical components, and basic hand tools for inspecting wiring and connectors can be helpful in diagnosing and repairing this code.

9. Does the U179C code in a Chevrolet indicating lost communication with hybrid/EV battery interface control modules affect the overall drivability of the vehicle?

- While the vehicle may still be operable with this code present, drivability issues such as reduced fuel efficiency and performance may occur due to potential problems in the hybrid/EV system.

10. Can a DIY enthusiast with basic automotive knowledge fix the U179C code related to lost communication with hybrid/EV battery interface control modules in a Chevrolet?

- Depending on the underlying cause, a DIY enthusiast with basic automotive knowledge may be able to address simple issues like checking connectors or inspecting wiring. However, complex problems may require professional assistance.