AutoCodes – Chevrolet – U01A0 2017 Chevrolet Silverado

U01A0 2017 Chevrolet Silverado Code - Lost Communication with Hybrid/EV Battery Interface Control Module 1

Quick Answer

This diagnostic monitors the internal battery communication status between the Hybrid/EV Powertrain Control Module 2 and the Hybrid/EV Battery Interface Control Modules. 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: U01A0 2017 Chevrolet Silverado indicates Lost Communication with Hybrid/EV Battery Interface Control Module 1.
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.

Save to My Repairs My Repairs

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

Code Popularity 182

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
Add Comment

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

Code U01A0 2017 Chevrolet Silverado Description

This diagnostic monitors the internal battery communication status between the Hybrid/EV Powertrain Control Module 2 and the Hybrid/EV Battery Interface Control Modules. The diagnostic monitors Hybrid/EV Battery Interface Control Modules data availability whenever this private communications bus is active. The communication network between Hybrid/EV Powertrain Control Module 2 and Hybrid/EV Battery Interface Control Modules is in a daisy-chain architecture. Therefore, a break at any point in the communication bus results in a loss of Hybrid/EV Battery Interface Control Modules communication with the Hybrid/EV Powertrain Control Module 2. If any data is received, the diagnostic will report a pass. If no data is received for greater than 4.5 s, the Hybrid/EV Powertrain Control Module 2 will attempt to initiate the Hybrid/EV Battery Interface Control Modules into a communication mode where the Hybrid/EV Battery Interface Control Modules can perform their own internal communication loop back, bypassing the daisy-chain. If this is the first Hybrid/EV Battery Interface Control Module in the daisy-chain that the Hybrid/EV Powertrain Control Module 2 cannot re-establish communication with, this diagnostic will fail. The Diagnostic Trouble Code (DTC) will be set when the Hybrid/EV Powertrain Control Module 2 has not received data from the Hybrid/EV Battery Interface Control Module 1 for more than 4.5 s.

OBDII Code U01A0 2017 Chevrolet Silverado - Lost Communication with Hybrid/EV Battery Interface Control Module 1 - AutoCodes.com — U01A0 2017 Chevrolet Silverado Code - Lost Communication with Hybrid/EV Battery Interface Control Module 1

What does this mean?

What are the Possible Causes of the DTC U01A0 2017 Chevrolet Silverado?

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 U01A0 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 U01A0 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 U01A0 2017 Chevrolet Silverado code?

Need more information on how to fix the U01A0 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U01A0 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 U01A0 2017 Chevrolet Silverado Code

1. What does the OBDII code U01A0 mean on a 2017 Chevrolet Silverado?

The code U01A0 indicates a "Lost Communication with Hybrid/EV Battery Interface Control Module 1" error on a 2017 Chevrolet Silverado.

2. What are the common symptoms of the U01A0 code in a 2017 Silverado?

Common symptoms of the U01A0 code may include loss of power, poor fuel efficiency, warning lights on the dashboard, and potential drivability issues.

3. What are the possible causes of the U01A0 code in a 2017 Chevrolet Silverado?

The U01A0 code can be triggered by issues such as a faulty hybrid/EV battery interface control module, damaged wiring or connectors, software glitches, or a drained hybrid battery.

4. How can I diagnose the U01A0 code in my 2017 Silverado?

Diagnosing the U01A0 code usually involves using a professional OBDII scanner to retrieve the code, inspecting the hybrid/EV battery interface control module, checking the wiring connections, and performing a battery health test.

5. Is it safe to continue driving with the U01A0 code present in my 2017 Chevrolet Silverado?

It is not recommended to drive with the U01A0 code active, as it can lead to further damage to the hybrid/EV system. It's best to have the issue diagnosed and repaired promptly.

6. Can I reset the U01A0 code in my 2017 Silverado with a simple DIY fix?

While you can try clearing the code with an OBDII scanner, it's crucial to address the underlying cause of the U01A0 error to prevent it from recurring. DIY fixes may not fully resolve the issue.

7. How much does it typically cost to repair the U01A0 code on a 2017 Chevrolet Silverado?

The cost of repairing the U01A0 code can vary depending on the exact cause of the issue. It's advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Are there any preventive maintenance tips to avoid encountering the U01A0 code in a 2017 Silverado?

Regularly servicing your hybrid/EV system, keeping the battery charged, and addressing any warning signs promptly can help prevent issues like the U01A0 code from occurring.

9. Can a local auto parts store read and interpret the U01A0 code for me on my 2017 Silverado?

Many auto parts stores offer free OBDII code reading services. However, interpreting the U01A0 code and determining the exact cause may require the expertise of a qualified mechanic.

10. How long does it typically take to repair the U01A0 code on a 2017 Chevrolet Silverado?

The repair time for the U01A0 code can vary based on the complexity of the issue and the availability of replacement parts. It's best to consult with a professional technician for a more accurate timeframe.