AutoCodes – Buick – U2614 Buick

U2614 Buick Code - Drive Motor 2 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 Drive Motor 2 Control Module, Drive Motor 2 Control Module harness is open or shorted, Drive Motor 2 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: U2614 Buick indicates Drive Motor 2 Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
Common causes: Common causes include Faulty Drive Motor 2 Control Module, Drive Motor 2 Control Module harness is open or shorted, Drive Motor 2 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 455

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 U2614 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.
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 U2614 Buick - Drive Motor 2 Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 - AutoCodes.com — U2614 Buick Code - Drive Motor 2 Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

What does this mean?

What are the Possible Causes of the DTC U2614 Buick?

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

How to Fix the DTC U2614 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 U2614 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 U2614 Buick Code

1. What are common symptoms of OBDII code U2614 in a Buick related to Drive Motor 2 Control Module communication loss with Hybrid/EV Powertrain Control Module 2?

- Common symptoms may include poor performance of the hybrid/EV system, reduced fuel efficiency, and the illumination of the check engine light.

2. What are possible causes of the U2614 code in a Buick indicating a communication issue between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- Possible causes could be a faulty control module, wiring issues, loose connections, software glitches, or a malfunction within the hybrid/EV powertrain system.

3. How can I diagnose the U2614 code in my Buick related to Drive Motor 2 Control Module losing communication with Hybrid/EV Powertrain Control Module 2?

- Diagnosis typically involves using an OBDII scanner to read the code, checking for any additional related codes, inspecting the wiring and connections, and testing the control modules for proper communication.

4. Can I still drive my Buick with the U2614 code indicating a loss of communication between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- It is not recommended to drive the vehicle extensively with this code present, as it may affect the hybrid/EV system's performance and potentially cause further damage.

5. How can I repair the U2614 code in my Buick signaling a communication problem between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- Repair options may include fixing any wiring or connection issues, replacing the faulty control module, updating software, or seeking professional help for more advanced diagnostics and repairs.

6. Are there any DIY tips to troubleshoot the U2614 code in my Buick related to Drive Motor 2 Control Module communication loss with Hybrid/EV Powertrain Control Module 2?

- DIY tips may include checking for loose connections, ensuring proper wiring integrity, resetting the system by disconnecting the battery, and scanning for any related trouble codes that could provide more insight.

7. How critical is it to address the U2614 code in a Buick indicating Drive Motor 2 Control Module lost communication with Hybrid/EV Powertrain Control Module 2?

- It is important to address this code promptly to prevent potential damage to the hybrid/EV system and ensure optimal performance of the vehicle.

8. Will resetting the OBDII system clear the U2614 code related to communication loss between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2 in my Buick?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.

9. Is the U2614 code in a Buick indicating Drive Motor 2 Control Module communication loss with Hybrid/EV Powertrain Control Module 2 a common issue?

- While not as common as some other OBDII codes, the U2614 code can occur in Buick vehicles with hybrid/EV powertrain systems due to various communication-related issues.

10. How can a professional mechanic help resolve the U2614 code in a Buick linked to Drive Motor 2 Control Module losing communication with Hybrid/EV Powertrain Control Module 2?

- A professional mechanic can conduct advanced diagnostics, pinpoint the exact cause of the communication problem, perform necessary repairs or replacements, and ensure the system is functioning correctly to clear the code.