AutoCodes – Generic – U2401

U2401 Code - Battery Energy Control Module Dedicated Bus 1 Off

Quick Answer

The Battery Energy Control Module dedicated bus is a communication bus used to communicate between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Modules inside the Hybrid/EV Battery Pack assembly. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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: U2401 indicates Battery Energy Control Module Dedicated Bus 1 Off.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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 2,029

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 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2401 Description

The Battery Energy Control Module dedicated bus is a communication bus used to communicate between the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Modules inside the Hybrid/EV Battery Pack assembly. The Battery Energy Control Module dedicated bus does not communicate with the scan tool. The device setting the Diagnostic Trouble Code (DTC) has received too many transmit errors on the Battery Energy Control Module dedicated serial data circuits.

OBDII Code U2401 - Battery Energy Control Module Dedicated Bus 1 Off - AutoCodes.com — U2401 Code - Battery Energy Control Module Dedicated Bus 1 Off

What does this mean?

What are the Possible Causes of the DTC U2401?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC U2401?

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 U2401 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 U2401 code?

Need more information on how to fix the U2401 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2401 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2401 Buick — Battery Energy Control Module Dedicated Bus 1 Off
U2401 Cadillac — Battery Energy Control Module Dedicated Bus 1 Off
U2401 Chevrolet — Battery Energy Control Module Dedicated Bus 1 Off
U2401 GMC — Battery Energy Control Module Dedicated Bus 1 Off

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 U2401 Code

1. What are the common symptoms of OBDII code U2401?

- Common symptoms include difficulty starting the vehicle, reduced fuel efficiency, and issues with the battery charging system.

2. What causes the OBDII code U2401 to trigger?

- This code is typically triggered by a malfunction in the Battery Energy Control Module (BECM) or issues with the communication bus dedicated to the BECM.

3. How serious is the U2401 code?

- The U2401 code can affect the performance and efficiency of the vehicle, so it is important to address it promptly to prevent further issues.

4. Can I still drive my vehicle with the U2401 code?

- It is not recommended to drive your vehicle with the U2401 code present, as it can lead to potential electrical system failures and other complications.

5. How do I diagnose the U2401 code?

- Diagnosing the U2401 code typically involves using a professional OBDII scanner to retrieve the code and then inspecting the BECM and related components for any visible damage or malfunctions.

6. What are some repair tips for fixing the U2401 code?

- Repairing the U2401 code may involve checking and repairing any damaged wiring, replacing the BECM if necessary, or reprogramming the control module to resolve the communication issue.

7. Can I reset the U2401 code myself?

- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from recurring.

8. How much does it cost to repair the U2401 code?

- The cost of repairing the U2401 code can vary depending on the extent of the issue and whether any components need to be replaced. It is recommended to consult a professional mechanic for an accurate estimate.

9. Will the U2401 code cause permanent damage to my vehicle?

- If left unresolved, the U2401 code can potentially cause damage to the electrical system and other components, so it is best to address it promptly.

10. How can I prevent the U2401 code from reoccurring?

- Regular maintenance and inspections of the battery energy control module and related components can help prevent the U2401 code from reoccurring.