AutoCodes – Chevrolet – U2614 Chevrolet

U2614 Chevrolet 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 Chevrolet 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 491

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

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 Chevrolet?

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 Chevrolet 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 Chevrolet Code

1. What are the common symptoms of OBDII code U2614 on a Chevrolet related to Drive Motor 2 Control Module communication loss?

- Common symptoms may include loss of power, poor fuel efficiency, and the vehicle going into a limp mode.

2. What are the possible causes for the U2614 code indicating Drive Motor 2 Control Module communication loss in a Chevrolet?

- Possible causes may include faulty wiring or connectors, a defective Drive Motor 2 Control Module, or issues with the Hybrid/EV Powertrain Control Module 2.

3. How can I diagnose the U2614 code on my Chevrolet indicating communication loss between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- Diagnosing the code may involve checking for loose connections, inspecting wiring harnesses for damage, and using a diagnostic scanner to retrieve specific error codes.

4. Can I still drive my Chevrolet with the U2614 code related to Drive Motor 2 Control Module communication loss?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

5. What are the repair options for fixing the U2614 code on a Chevrolet due to communication loss between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- Repair options may include repairing or replacing damaged wiring, replacing faulty modules, and clearing the code with a diagnostic tool.

6. Is it necessary to visit a dealership or can an independent mechanic address the U2614 code on a Chevrolet?

- An independent mechanic with experience in hybrid/EV systems should be able to diagnose and repair the issue, but visiting a dealership with specialized equipment is also an option.

7. Are there any DIY steps I can take to troubleshoot the U2614 code on my Chevrolet before seeking professional help?

- You can start by checking for loose connections, inspecting visible wiring for damage, and resetting the code with a diagnostic scanner to see if it returns.

8. How serious is the U2614 code related to Drive Motor 2 Control Module communication loss in a Chevrolet?

- This code should be addressed promptly to prevent further damage to the vehicle's hybrid/EV system and ensure safe operation.

9. Can weather conditions or extreme temperatures trigger the U2614 code on a Chevrolet?

- While extreme conditions may not directly cause this code, they can exacerbate existing issues with wiring or electronic components leading to communication loss.

10. Will the U2614 code on a Chevrolet reset itself after a certain number of drive cycles once the issue is resolved?

- In some cases, the code may clear itself after a certain number of successful drive cycles once the underlying problem causing the communication loss is fixed.