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Engine-Codes – Generic – U2622

U2622 Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10

Quick Answer

The diagnostic trouble code U2622 indicates that the Battery Energy Control Module (BECM) has lost communication with the Hybrid/EV Battery Interface Control Module 10. Common causes include Faulty Wiring: Corroded or damaged wiring connections can disrupt communication between the BECM and the battery interface module, Malfunctioning Control Module: A malfunctioning battery interface control module can prevent proper communication with the BECM, Software Issue: A software glitch or programming error in either module can lead to communication problems. 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
U2622 indicates Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10.
Common causes
Common causes include Faulty Wiring: Corroded or damaged wiring connections can disrupt communication between the BECM and the battery interface module, Malfunctioning Control Module: A malfunctioning battery interface control module can prevent proper communication with the BECM, Software Issue: A software glitch or programming error in either module can lead to communication problems.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code U2622 Description

The diagnostic trouble code U2622 indicates that the Battery Energy Control Module (BECM) has lost communication with the Hybrid/EV Battery Interface Control Module 10. The BECM is responsible for managing the energy flow in the hybrid or electric vehicle, while the Battery Interface Control Module 10 controls the communication between the BECM and the battery. When communication is lost between these two modules, it can lead to a variety of issues that can affect the vehicle's performance and efficiency.

OBDII Code U2622 - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10
U2622 Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10

Common Causes of U2622

  1. Faulty Wiring: Corroded or damaged wiring connections can disrupt communication between the BECM and the battery interface module.
  2. Malfunctioning Control Module: A malfunctioning battery interface control module can prevent proper communication with the BECM.
  3. Software Issue: A software glitch or programming error in either module can lead to communication problems.
  4. BECM Failure: A failing BECM can result in lost communication with the battery interface module.
  5. Environmental Factors: Extreme temperatures or moisture exposure can also contribute to communication issues between the modules.

Symptoms of U2622

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: Drivers may notice a decrease in fuel efficiency due to the improper communication between the BECM and the battery interface module.
  3. Poor Acceleration: The vehicle may experience sluggish or delayed acceleration as a result of the communication issue.
  4. Hybrid System Malfunction: In hybrid vehicles, the hybrid system may malfunction or fail to operate correctly due to the lost communication between modules.
  5. Inability to Charge: Electric vehicles may have difficulty charging or maintaining a proper charge due to the communication error.

How to Fix U2622

  1. Diagnostic Testing: Begin with a comprehensive diagnostic scan to pinpoint the exact cause of the communication issue.
  2. Check Wiring and Connections: Inspect the wiring harness and connectors for any signs of damage or corrosion and repair or replace as necessary.
  3. Test Control Modules: Test the battery interface control module and the BECM to determine if either unit is faulty and replace if needed.
  4. Software Update: Perform a software update or reprogramming of the modules to address any software-related communication issues.
  5. Clear Codes and Reset: After completing the repairs, clear the diagnostic trouble codes and reset the system to ensure proper communication is restored.

Cost to Fix U2622

The typical repair costs for addressing a U2622 code can vary depending on the specific cause of the communication issue. In general, parts and labor for this repair can range from $200 to $800. However, it's essential to note that diagnosis time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, and engine type. Auto repair shops typically charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships and lower at independent shops. For a more accurate cost estimate, it's recommended to consult with a local auto repair shop.

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Code U2622 Information for Specific Makes

  • U2622 Buick — Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10
  • U2622 Cadillac — Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10
  • U2622 Chevrolet — Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10
  • U2622 GMC — Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 10
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 U2622 Code

1. What are common symptoms of OBDII code U2622?

- Common symptoms include illuminated check engine light, loss of power, poor fuel efficiency, and potential issues with starting the vehicle.

2. What does OBDII code U2622 indicate?

- This code indicates that the Battery Energy Control Module has lost communication with the Hybrid/EV Battery Interface Control Module 10.

3. What are possible causes of code U2622?

- Possible causes include faulty wiring, loose connections, a malfunctioning Battery Energy Control Module, or issues with the Hybrid/EV Battery Interface Control Module 10.

4. How can I diagnose OBDII code U2622?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the code, checking the connections between the modules, and inspecting the wiring for any damage.

5. Can I still drive my vehicle with code U2622?

- It is not recommended to drive your vehicle with this code present, as it can lead to further issues and potential damage to the hybrid or electric components.

6. How can I repair OBDII code U2622?

- Repairing this code may involve checking and repairing any faulty wiring or connections, replacing the Battery Energy Control Module or the Hybrid/EV Battery Interface Control Module 10 if necessary.

7. Is it safe to reset the code U2622 and continue driving?

- While resetting the code may temporarily turn off the check engine light, it is important to diagnose and address the underlying issue to prevent further problems.

8. Can a DIY enthusiast fix OBDII code U2622?

- Depending on the skill level and access to tools, DIY enthusiasts may be able to address simple causes such as loose connections, but more complex issues may require professional assistance.

9. How much does it cost to repair OBDII code U2622?

- Repair costs can vary depending on the exact cause of the issue, but it may involve labor charges for diagnostics and repair, as well as potential parts replacement costs.

10. How often does OBDII code U2622 occur in hybrid or electric vehicles?

- While not extremely common, this code can occur in hybrid or electric vehicles due to the complex nature of the systems involved. Regular maintenance and inspections can help prevent such issues.

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