AutoCodes – Generic – U2506

U2506 Code - Invalid Data Received From Dual Battery Control Module

Quick Answer

Some devices are constantly receiving information from other devices through serial data communication network. Common causes include Reprogram Dual Battery Control Module, Faulty Dual Battery Control Module, Dual Battery Control Module harness is open or shorted. 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: U2506 indicates Invalid Data Received From Dual Battery Control Module.
Common causes: Common causes include Reprogram Dual Battery Control Module, Faulty Dual Battery Control Module, Dual Battery Control Module harness is open or shorted.
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 518

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 U2506 Description

Some devices are constantly receiving information from other devices through serial data communication network. The invalid data code will be set when a receiving device detects a discrepancy in the information it receives from another device causing its integrity to be questioned. The symptom byte listed in the Diagnostic Trouble Code (DTC) Descriptor is for engineering reference only. No external circuit diagnosis is involved. The DTC will set if the Dual Battery Control Module is not configured properly.

OBDII Code U2506 - Invalid Data Received From Dual Battery Control Module - AutoCodes.com — U2506 Code - Invalid Data Received From Dual Battery Control Module

What does this mean?

What are the Possible Causes of the DTC U2506?

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

How to Fix the DTC U2506?

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 U2506 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 U2506 code?

Need more information on how to fix the U2506 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2506 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2506 Buick — Invalid Data Received From Dual Battery Control Module
U2506 Cadillac — Invalid Data Received From Dual Battery Control Module
U2506 Chevrolet — Invalid Data Received From Dual Battery Control Module
U2506 GMC — Invalid Data Received From Dual Battery Control Module

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 U2506 Code

1. What are the common symptoms of OBDII code U2506?

- Common symptoms include issues with starting the vehicle, dimming or flickering lights, and problems with the electrical system.

2. What can cause the OBDII code U2506 to appear?

- The code U2506 typically appears when there is an issue with the communication between the vehicle's main control module and the dual battery control module.

3. How can I diagnose the OBDII code U2506?

- Diagnosing the code U2506 usually involves using a scan tool to retrieve the specific error codes stored in the vehicle's computer system and checking the communication between modules.

4. What are some possible repair tips for OBDII code U2506?

- Repair tips may include checking and repairing any loose or damaged wiring connections, ensuring the battery connections are secure, and updating the software in the control modules.

5. Can a faulty battery cause the OBDII code U2506 to trigger?

- Yes, a faulty battery or issues with the battery connections can sometimes cause the code U2506 to trigger due to disruptions in the power supply.

6. Is it safe to continue driving with the OBDII code U2506 present?

- It is not recommended to continue driving with the code U2506 present, as it can lead to further electrical issues and potential safety hazards.

7. How much does it typically cost to repair the OBDII code U2506?

- The cost of repairing the code U2506 can vary depending on the underlying cause, but it may involve labor costs for diagnosis and repair, as well as potential parts replacement.

8. Can the OBDII code U2506 be reset without fixing the underlying issue?

- While the code U2506 can be cleared using a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any recalls related to the OBDII code U2506?

- It is recommended to check with the vehicle manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to the code U2506 for your specific vehicle.

10. How can I prevent the OBDII code U2506 from coming back?

- To prevent the code U2506 from reoccurring, it is essential to perform regular maintenance checks on the vehicle's electrical system, including the battery and wiring connections.