AutoCodes – Cadillac – U2605 Cadillac

U2605 Cadillac Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 3

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 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
U2605 Cadillac indicates Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 3.
Common causes
Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 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 528
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 18, 2020
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Code U2605 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.
The scan tool does not communicate the Hybrid/EV Battery Interface Control Modules 3 on Battery Energy Control Module dedicated bus.
The Diagnostic Trouble Code (DTC) will set when there is no temperature report message from Hybrid/EV Battery Interface Control Modules 3 to Battery Energy Control Module within 4s.
OBDII Code U2605 Cadillac - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 3 - AutoCodes.com
U2605 Cadillac Code - Battery Energy Control Module Lost Communication With Hybrid/EV Battery Interface Control Module 3

What are the Possible Causes of the DTC U2605 Cadillac?

  • Faulty Hybrid/EV Battery Interface Control Module 3
  • Hybrid/EV Battery Interface Control Module 3 harness is open or shorted
  • Hybrid/EV Battery Interface Control Module 3 circuit poor electrical connection
  • Faulty Battery Energy Control Module

How to Fix the DTC U2605 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 U2605 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.

Need more information about the U2605 Cadillac code?

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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 U2605 Cadillac Code

1. What are common symptoms of OBDII code U2605 in a Cadillac?

- Common symptoms include a check engine light appearing on the dashboard, reduced hybrid/EV battery performance, and potential issues with the overall vehicle drivability.

2. What does the OBDII code U2605 in a Cadillac indicate?

- This code indicates that there is a communication problem between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 3.

3. What are possible causes of the U2605 OBDII code in a Cadillac?

- Possible causes include wiring issues, faulty connections, a defective Battery Energy Control Module, a malfunctioning Hybrid/EV Battery Interface Control Module 3, or software communication errors.

4. How can I diagnose the U2605 code in my Cadillac?

- Diagnosing the U2605 code involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring and connections between the modules, and performing a thorough inspection of the hybrid/EV battery system.

5. Can I continue driving my Cadillac with the U2605 code present?

- It is not recommended to continue driving your Cadillac with the U2605 code present, as it can lead to further damage to the hybrid/EV system and potentially affect the vehicle's performance and safety.

6. How can the U2605 code in a Cadillac be repaired?

- Repairing the U2605 code typically involves addressing the underlying communication issue between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Module 3, which may require repairing wiring, replacing faulty components, or updating software.

7. Are there any DIY repair tips for the U2605 code in a Cadillac?

- DIY repair for the U2605 code can be challenging due to the complex nature of hybrid/EV systems. It is recommended to consult a professional mechanic or dealership with experience in hybrid vehicle repair.

8. How much does it cost to repair the U2605 code in a Cadillac?

- The cost of repairing the U2605 code in a Cadillac can vary depending on the underlying issue, the extent of the repairs needed, and the labor rates of the repair facility. It is advisable to obtain estimates from multiple sources before proceeding with repairs.

9. Can the U2605 code be intermittent in a Cadillac?

- Yes, the U2605 code can sometimes be intermittent, meaning the communication issue between the modules may come and go. However, it is still important to address the underlying problem to prevent potential long-term damage.

10. Is the U2605 code specific to Cadillac vehicles only?

- The U2605 code is specific to Cadillac vehicles that have hybrid or electric vehicle capabilities and may not be applicable to other vehicle makes and models.

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