AutoCodes – Buick – U2619 Buick

U2619 Buick Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 7

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Battery Interface Control Module 7, Hybrid/EV Battery Interface Control Module 7 harness is open or shorted, Hybrid/EV Battery Interface Control Module 7 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: U2619 Buick indicates Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 7.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module 7, Hybrid/EV Battery Interface Control Module 7 harness is open or shorted, Hybrid/EV Battery Interface Control Module 7 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 546

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 U2619 Buick 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.
The scan tool does not communicate the Hybrid/EV Battery Interface Control Modules 7 on Battery Energy Control Module dedicated bus.
The Diagnostic Trouble Code (DTC) will set when there is no temperature report message from Hybrid/EV Battery Interface Control Modules 7 to Battery Energy Control Module within 4s.

OBDII Code U2619 Buick - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 7 - AutoCodes.com — U2619 Buick Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 7

What does this mean?

What are the Possible Causes of the DTC U2619 Buick?

Faulty Hybrid/EV Battery Interface Control Module 7
Hybrid/EV Battery Interface Control Module 7 harness is open or shorted
Hybrid/EV Battery Interface Control Module 7 circuit poor electrical connection
Faulty Battery Energy Control Module

How to Fix the DTC U2619 Buick?

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 U2619 Buick 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.

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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 U2619 Buick Code

1. What are the common symptoms of OBDII code U2619 in a Buick related to Battery Energy Control Module communication loss?

The common symptoms include illuminated warning lights on the dashboard, reduced hybrid system performance, and potential difficulty starting the vehicle.

2. What are possible causes of the U2619 code in a Buick indicating communication loss between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 7?

Possible causes may include a faulty Battery Energy Control Module, a malfunctioning Hybrid/EV Battery Interface Control Module 7, wiring issues, or a weak or dead hybrid/EV battery.

3. How can I diagnose the U2619 code in my Buick to pinpoint the source of the communication loss?

Professional diagnostic tools can be used to scan for trouble codes, check the communication between modules, and perform electrical tests to identify the root cause of the communication issue.

4. What steps can be taken to repair the U2619 code in a Buick to restore communication between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 7?

Repair options may include repairing or replacing damaged wiring, replacing faulty modules, updating software or firmware, and ensuring proper connections are secure and functioning.

5. Is it safe to continue driving my Buick with the U2619 code indicating a communication loss between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 7?

It is recommended to address the issue promptly to prevent further damage to the hybrid system. Continued driving with communication issues can lead to reduced performance and potential safety risks.

6. Can I reset the U2619 code in my Buick by disconnecting the battery or clearing the codes with a diagnostic tool?

While clearing the codes may temporarily remove the warning lights, it is important to diagnose and repair the underlying issue causing the communication loss to prevent the code from reoccurring.

7. How can regular maintenance help prevent the U2619 code from appearing in my Buick?

Regularly scheduled maintenance, including checking and maintaining the hybrid system components, can help identify potential issues early and prevent communication problems between modules.

8. Are there any recalls or technical service bulletins related to the U2619 code in Buick vehicles?

It is recommended to check with your Buick dealership or the manufacturer's website for any recalls or technical service bulletins related to the U2619 code to see if your vehicle may be eligible for free repairs or updates.

9. Can a DIY enthusiast with automotive knowledge repair the U2619 code in a Buick, or is it best left to professional technicians?

While some basic troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing communication issues between complex modules like the Battery Energy Control Module and Hybrid/EV Battery Interface Control Module 7 may require professional expertise.

10. How much can I expect to pay for repairing the U2619 code in my Buick related to communication loss between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 7?

Repair costs can vary depending on the exact cause of the communication issue, parts needed for replacement, and labor rates. It is recommended to obtain quotes from reputable repair shops or dealerships for an accurate estimate.