AutoCodes – GMC – U2623 GMC

U2623 GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 11

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 11, Hybrid/EV Battery Interface Control Module 11 harness is open or shorted, Hybrid/EV Battery Interface Control Module 11 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
U2623 GMC indicates Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 11.
Common causes
Common causes include Faulty Hybrid/EV Battery Interface Control Module 11, Hybrid/EV Battery Interface Control Module 11 harness is open or shorted, Hybrid/EV Battery Interface Control Module 11 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 633
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 18, 2020
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Code U2623 GMC 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 11 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 11 to Battery Energy Control Module within 4s.
OBDII Code U2623 GMC - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 11 - AutoCodes.com
U2623 GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 11

What are the Possible Causes of the DTC U2623 GMC?

  • Faulty Hybrid/EV Battery Interface Control Module 11
  • Hybrid/EV Battery Interface Control Module 11 harness is open or shorted
  • Hybrid/EV Battery Interface Control Module 11 circuit poor electrical connection
  • Faulty Battery Energy Control Module

How to Fix the DTC U2623 GMC?

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 U2623 GMC 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 U2623 GMC 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 U2623 GMC Code

1. What are the common symptoms of OBDII code U2623 in a GMC vehicle?

- Common symptoms include loss of communication between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 11, resulting in potential issues with the hybrid or electric powertrain system.

2. What can cause the U2623 code to trigger in a GMC vehicle?

- The U2623 code is typically triggered when there is a communication breakdown between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 11, which can be caused by wiring issues, module malfunctions, or software glitches.

3. How serious is the U2623 fault code in a GMC vehicle?

- The U2623 fault code should be addressed promptly as it indicates a loss of communication between critical components of the hybrid or electric powertrain system, which can potentially affect the vehicle's performance and efficiency.

4. How can I diagnose the U2623 code in my GMC vehicle?

- Diagnosing the U2623 code requires using a professional OBDII scanner to retrieve the specific details of the code, checking the wiring connections between the modules, and inspecting the modules themselves for any signs of damage or malfunction.

5. What are the repair options for the U2623 fault code in a GMC vehicle?

- Repair options for the U2623 code may include repairing or replacing damaged wiring, resetting or reprogramming the control modules, or replacing the Battery Energy Control Module or Hybrid/EV Battery Interface Control Module 11 if necessary.

6. Can I drive my GMC vehicle with the U2623 fault code?

- It is not recommended to drive your GMC vehicle with the U2623 fault code present, as it can lead to potential issues with the hybrid or electric powertrain system, affecting the vehicle's performance and safety.

7. How much does it typically cost to repair the U2623 fault code in a GMC vehicle?

- The cost of repairing the U2623 fault code can vary depending on the exact cause of the communication loss and the necessary repairs, but it may range from a few hundred to several hundred dollars.

8. Are there any preventive measures to avoid the U2623 fault code in a GMC vehicle?

- To prevent the U2623 fault code, it is essential to ensure regular maintenance of the hybrid or electric powertrain system, including checking the wiring connections and keeping the control modules updated with the latest software.

9. Can a DIY enthusiast fix the U2623 fault code in a GMC vehicle?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U2623 fault code may require specialized tools and expertise, so it is recommended to seek professional assistance for a proper fix.

10. How long does it take to repair the U2623 fault code in a GMC vehicle?

- The repair time for the U2623 fault code can vary depending on the exact cause of the issue and the extent of repairs needed, but it may take a few hours to a full day for a professional technician to diagnose and fix the problem.

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