AutoCodes – Chevrolet – U2520 Chevrolet

U2520 Chevrolet Code - Invalid Data Received From Active Safety Control Module 1 On High Speed CAN B

Quick Answer

Some devices are constantly receiving information from other devices through serial data communication network. Common causes include Reprogram Active Safety Control Module 1, Faulty Active Safety Control Module 1, Active Safety Control Module 1 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
U2520 Chevrolet indicates Invalid Data Received From Active Safety Control Module 1 On High Speed CAN B.
Common causes
Common causes include Reprogram Active Safety Control Module 1, Faulty Active Safety Control Module 1, Active Safety Control Module 1 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 542
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 U2520 Chevrolet 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 Active Safety Control Module 1 is not configured properly.
OBDII Code U2520 Chevrolet - Invalid Data Received From Active Safety Control Module 1 On High Speed CAN B - AutoCodes.com
U2520 Chevrolet Code - Invalid Data Received From Active Safety Control Module 1 On High Speed CAN B

What are the Possible Causes of the DTC U2520 Chevrolet?

  • Reprogram Active Safety Control Module 1
  • Faulty Active Safety Control Module 1
  • Active Safety Control Module 1 harness is open or shorted
  • Active Safety Control Module 1 circuit poor electrical connection

How to Fix the DTC U2520 Chevrolet?

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 U2520 Chevrolet 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 U2520 Chevrolet code?

Need more information on how to fix the U2520 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2520 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 U2520 Chevrolet Code

1. What are common symptoms of OBDII code U2520 in a Chevrolet vehicle?

- Common symptoms include malfunctioning active safety features, warning lights on the dashboard, and loss of communication with the Active Safety Control Module 1.

2. What could cause the OBDII code U2520 to appear in a Chevrolet?

- This code is typically caused by faulty wiring or connections in the High Speed CAN B network, a defective Active Safety Control Module 1, or software issues.

3. How can I diagnose the OBDII code U2520 in my Chevrolet?

- Diagnosing this code usually involves checking the wiring and connections in the High Speed CAN B network, testing the Active Safety Control Module 1 for faults, and scanning for any related trouble codes.

4. Can I still drive my Chevrolet with the U2520 code present?

- It is not recommended to drive the vehicle with the U2520 code active, as it may affect the proper functioning of important safety systems.

5. How do I repair the U2520 code in my Chevrolet?

- Repairing this code may involve repairing or replacing damaged wiring, fixing faulty connections, replacing the Active Safety Control Module 1 if necessary, and clearing the trouble codes.

6. Is it possible to reset the U2520 code in a Chevrolet without fixing the underlying issue?

- While you can reset the code temporarily, it will likely reappear if the root cause is not addressed. It is important to diagnose and repair the issue to prevent further problems.

7. Can a DIY enthusiast fix the U2520 code in a Chevrolet?

- Depending on your skill level and access to tools, you may be able to address simple wiring or connection issues. However, more complex repairs or module replacements may require professional assistance.

8. How can I prevent the U2520 code from reoccurring in my Chevrolet?

- To prevent the U2520 code from coming back, make sure to regularly inspect and maintain the wiring and connections in the High Speed CAN B network, and address any issues promptly.

9. Will fixing the U2520 code affect my Chevrolet's safety systems?

- Fixing this code is crucial for ensuring the proper function of your Chevrolet's safety systems, such as traction control, stability control, and collision avoidance features.

10. How long does it typically take to repair the U2520 code in a Chevrolet?

- The repair time for the U2520 code can vary depending on the exact cause and complexity of the issue. Simple fixes may take a few hours, while more involved repairs may require a day or more.

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