AutoCodes – GMC – U2614 GMC

U2614 GMC 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 GMC 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 499

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

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 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 U2614 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.

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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 GMC Code

1. What are common symptoms of OBDII code U2614 in a GMC vehicle?

The common symptoms of code U2614 may include poor hybrid system performance, reduced fuel efficiency, and a warning light on the dashboard indicating a hybrid system issue.

2. What does the OBDII code U2614 in a GMC indicate?

Code U2614 indicates that the Drive Motor 2 Control Module has lost communication with the Hybrid/EV Powertrain Control Module 2 in the vehicle's hybrid or electric powertrain system.

3. What are possible causes of OBDII code U2614 in a GMC?

Possible causes of code U2614 include a faulty Drive Motor 2 Control Module, a malfunctioning Hybrid/EV Powertrain Control Module 2, wiring issues, loose connections, or software communication errors within the hybrid system.

4. How can I diagnose OBDII code U2614 in my GMC?

Diagnosing code U2614 typically involves using a professional OBDII scanner to retrieve the code and further diagnose the specific components within the hybrid powertrain system. Checking for loose connections, inspecting wiring harnesses, and performing communication tests may also be necessary.

5. Can I continue driving my GMC with OBDII code U2614 present?

It is not recommended to continue driving your GMC with code U2614 present, as it may lead to further damage to the hybrid powertrain system and potential safety hazards. It is advised to have the issue diagnosed and repaired as soon as possible.

6. How can I repair OBDII code U2614 in my GMC?

Repairing code U2614 may involve addressing the root cause of the communication loss between the Drive Motor 2 Control Module and the Hybrid/EV Powertrain Control Module 2. This could include replacing faulty modules, repairing wiring or connections, updating software, or resetting the system.

7. Is it possible to reset OBDII code U2614 in a GMC without repairs?

While clearing the code with an OBDII scanner may temporarily remove the warning light, the underlying issue causing code U2614 will likely persist. It is recommended to diagnose and repair the problem to prevent future occurrences.

8. How much does it cost to fix OBDII code U2614 in a GMC?

The cost of fixing code U2614 can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates. It is advisable to consult a professional mechanic or dealership for an accurate cost estimate.

9. Can a DIY enthusiast fix OBDII code U2614 in a GMC?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing code U2614 may require specialized tools, technical knowledge, and experience with hybrid powertrain systems. It is recommended to seek professional assistance for complex issues.

10. How can I prevent OBDII code U2614 from occurring in my GMC?

To prevent code U2614 from occurring, it is essential to maintain regular maintenance of the hybrid powertrain system, including checking for loose connections, keeping software up to date, and addressing any warning lights or issues promptly.