What is C0561-71?

C0561-71 is a diagnostic trouble code (DTC) that stands for "System Disabled Information Stored Invalid Serial Data Received." This code is related to the Electronic Brake Control Module (EBCM) and indicates that the module has received invalid data from another component in the vehicle's network.

Causes of C0561-71

The primary cause of this error is the EBCM receiving an invalid message from another module over the GMLAN (General Motors Local Area Network). This can happen due to:

  • Faulty wiring or connections
  • Malfunctioning sensors
  • Issues with other control modules (ECM, BCM, TCM)
  • Software glitches in the EBCM or other modules

Effects on Vehicle Performance

When the C0561-71 code is set, the EBCM takes protective action by disabling several critical safety systems:

  • Antilock Brake System (ABS)
  • Traction Control System
  • Electronic Stability Control

This can significantly impact the vehicle's handling and safety, especially in adverse driving conditions.

Diagnostic Process

To diagnose the C0561-71 error:

1. Use a diagnostic scanner to check for additional DTCs

2. Inspect all relevant wiring and connections

3. Check the functionality of related sensors and modules

4. Verify the EBCM software is up to date

5. Perform a thorough system scan to identify communication issues between modules

Fixing C0561-71

Resolving this error typically involves:

  • Repairing or replacing faulty wiring
  • Updating module software
  • Replacing malfunctioning sensors or modules
  • In some cases, replacing the EBCM itself

It's crucial to address this issue promptly to ensure all safety systems are functioning correctly.

Prevention

To prevent C0561-71 and similar errors:

  • Regularly maintain your vehicle
  • Address check engine lights promptly
  • Use high-quality replacement parts
  • Avoid amateur modifications to the vehicle's electrical system

When to Seek Professional Help

If you're not comfortable with automotive diagnostics or lack the necessary tools, it's best to consult a professional mechanic or dealership. They have the expertise and equipment to accurately diagnose and resolve EBCM-related issues.

FAQs About C0561-71

    • Can I drive with the C0561-71 code active?
      While the vehicle may still operate, it's not recommended as critical safety systems are disabled.
    • Will clearing the code fix the problem?
      Clearing the code without addressing the underlying issue will likely result in the code returning.
    • How much does it cost to fix C0561-71?
      Costs vary widely depending on the root cause, ranging from simple repairs to module replacements.