AutoCodes – Generic – U2612

U2612 Code - Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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: U2612 indicates Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
Common causes: Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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 727

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 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2612 Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on a high-speed General Motors Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 2. If this message is not received within 400 ms, the Battery Energy Control Module increases its fail count. When this fail count is over X Cal Value (7) during Y Cal Value (10 samples), the diagnostic status of this code is set to Failed and transmitted over high voltage energy high-speed GMLAN bus to the Hybrid/EV Powertrain Control Module 2.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received within 400 ms.

OBDII Code U2612 - Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 - AutoCodes.com — U2612 Code - Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

What does this mean?

What are the Possible Causes of the DTC U2612?

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

How to Fix the DTC U2612?

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 U2612 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 U2612 code?

Need more information on how to fix the U2612 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2612 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2612 Buick — Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2612 Cadillac — Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2612 Chevrolet — Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2612 GMC — Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

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 U2612 Code

1. What are the common symptoms of OBDII code U2612?

- Common symptoms include a check engine light illuminated on the dashboard, issues with the hybrid or electric vehicle powertrain, and difficulty starting the vehicle.

2. What can cause the OBDII code U2612 to trigger?

- This code is typically triggered when there is a communication breakdown between the battery charger control module and the hybrid/EV powertrain control module 2, which can be caused by wiring issues, faulty modules, or software glitches.

3. How serious is the U2612 code?

- The U2612 code should be addressed promptly as it can affect the performance and drivability of the vehicle, especially in hybrid or electric vehicles. Ignoring this code may lead to further electrical system problems.

4. Can I still drive my vehicle with the U2612 code present?

- It is not recommended to drive the vehicle with the U2612 code present, as it may result in unpredictable behavior of the powertrain system, potential loss of power, or other safety hazards.

5. How can I diagnose and repair the U2612 code?

- Diagnosing and repairing the U2612 code typically involves checking the wiring connections between the battery charger control module and the powertrain control module, testing the modules for functionality, and updating software if necessary.

6. Is it possible to reset the U2612 code without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is important to address the root cause of the communication error to prevent the code from recurring and ensure the proper functioning of the vehicle.

7. Can a DIYer fix the U2612 code, or should it be done by a professional mechanic?

- Due to the complexity of the electrical systems involved, it is recommended to have a professional mechanic diagnose and repair the U2612 code to ensure the correct procedures are followed and the issue is resolved effectively.

8. Are there any preventive measures to avoid the U2612 code from occurring?

- Regular maintenance checks, ensuring proper electrical connections, and promptly addressing any related warning signs can help prevent the U2612 code from occurring.

9. How long does it typically take to repair the U2612 code?

- The repair time for the U2612 code can vary depending on the root cause of the communication error, but it may take a few hours to a day to diagnose and fix the issue.

10. Is the U2612 code covered under any warranty?

- Depending on the vehicle's warranty coverage, the repair for the U2612 code may be covered if the issue is deemed a manufacturing defect. It is advisable to check with the manufacturer or your warranty provider for specific details.