AutoCodes – Generic – U2615

U2615 Code - Auxiliary Transmission Fluid Pump 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 Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump 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: U2615 indicates Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
Common causes: Common causes include Faulty Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump 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 702

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 U2615 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 U2615 - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 - AutoCodes.com — U2615 Code - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

What does this mean?

What are the Possible Causes of the DTC U2615?

Faulty Auxiliary Transmission Fluid Pump Control Module
Auxiliary Transmission Fluid Pump Control Module harness is open or shorted
Auxiliary Transmission Fluid Pump Control Module circuit poor electrical connection
Faulty Hybrid/EV Powertrain Control Module 2

How to Fix the DTC U2615?

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 U2615 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.

Need more information about the U2615 code?

Need more information on how to fix the U2615 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2615 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2615 Buick — Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2615 Cadillac — Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2615 Chevrolet — Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
U2615 GMC — Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2

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 U2615 Code

1. What are the common symptoms of OBDII code U2615?

- Common symptoms include issues with the hybrid/EV powertrain, transmission fluid pump control, warning lights on the dashboard, and possible transmission performance issues.

2. What can cause the U2615 code to be triggered?

- The U2615 code may be triggered due to a communication error between the auxiliary transmission fluid pump control module and the hybrid/EV powertrain control module 2.

3. How serious is the U2615 code?

- The U2615 code should be addressed promptly as it can lead to potential issues with the transmission fluid pump control, affecting the overall performance of the vehicle's transmission system.

4. How can I diagnose the U2615 code?

- Diagnosing the U2615 code typically involves using an OBDII scanner to retrieve the code, conducting a thorough visual inspection of the wiring and connectors, and performing communication tests between the modules.

5. What are some possible repair tips for OBDII code U2615?

- Repair tips may include checking and repairing any damaged wiring or connectors, resetting the fault codes after fixing the issue, and ensuring proper communication between the modules.

6. Can I continue driving with the U2615 code present?

- It is not recommended to continue driving with the U2615 code present as it can lead to potential transmission problems and further damage if left unaddressed.

7. How much does it typically cost to repair the U2615 code?

- The cost of repairing the U2615 code can vary depending on the extent of the issue, the necessary repairs, and labor costs. It is advisable to consult with a professional mechanic for an accurate estimate.

8. Is the U2615 code specific to certain vehicle makes and models?

- The U2615 code is specific to vehicles equipped with OBDII systems, particularly hybrid or electric vehicles that have auxiliary transmission fluid pump control modules and hybrid/EV powertrain control modules.

9. Can a DIY enthusiast fix the U2615 code at home?

- While some basic troubleshooting steps can be performed at home, addressing the U2615 code may require specialized tools, technical knowledge, and experience, making it more suitable for professional mechanics.

10. How can I prevent the U2615 code from reoccurring in the future?

- To prevent the U2615 code from reoccurring, it is important to regularly maintain your vehicle, address any communication issues promptly, and follow the manufacturer's recommended maintenance schedule for your specific vehicle model.