AutoCodes – Cadillac – U2614 Cadillac

U2614 Cadillac 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 Cadillac 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 717

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

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms may include loss of power, decreased fuel efficiency, issues with shifting gears, and the illumination of the Check Engine Light.

2. What are potential causes of OBDII code U2614 in a Cadillac indicating communication loss between Drive Motor 2 Control Module and Hybrid/EV Powertrain Control Module 2?

- Possible causes include wiring or connection issues, a faulty control module, software glitches, or problems with the communication network.

3. How can I diagnose the underlying issue causing OBDII code U2614 in a Cadillac?

- Diagnosis typically involves conducting a thorough inspection of the wiring and connectors, checking the control modules for proper function, and using a diagnostic scanner to assess communication on the network.

4. Is it safe to continue driving with OBDII code U2614 in a Cadillac present?

- It is recommended to address the issue promptly to prevent potential damage to the vehicle's components. Continued driving with the problem unresolved may lead to further issues.

5. Can I reset the OBDII code U2614 in a Cadillac myself?

- While you can clear the code with an OBDII scanner, it is important to identify and address the root cause of the communication loss between the modules to prevent the code from reappearing.

6. Are there any common repair tips for resolving OBDII code U2614 in a Cadillac related to Drive Motor 2 Control Module communication issues?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, updating software if available, and replacing any faulty control modules if necessary.

7. How much does it typically cost to repair OBDII code U2614 in a Cadillac?

- The repair cost can vary depending on the underlying cause of the issue. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Can extreme weather conditions impact the occurrence of OBDII code U2614 in a Cadillac?

- Extreme temperatures or weather conditions can potentially affect the performance of the control modules and communication network, leading to intermittent issues with code U2614.

9. Will OBDII code U2614 in a Cadillac affect the vehicle's drivability?

- The impact on drivability can vary, but it is possible to experience issues such as reduced power or efficiency until the communication problem between the modules is resolved.

10. How often should I check for OBDII code U2614 in a Cadillac to ensure the system is functioning properly?

- It is advisable to regularly monitor the vehicle for any new codes, especially after repairs or maintenance, to catch any emerging issues related to Drive Motor 2 Control Module communication.