SUPER MB PRO M6+ PRO Error "Initialization of Diagnosis Multiplexer Failed" Solution

Some customers gave feedback that when they were using the SUPER MB PRO M6+ PRO, the computer showed "Connected" in the bottom-right corner, but an error appeared during vehicle diagnosis:

Error Message:
"Initialization of diagnosis multiplexer failed."

Possible Causes:

  1. The link between the diagnosis multiplexer and the diagnostic socket is interrupted.
  2. The linkbetween the diagnosis multiplexer and the diagnostic unit is interrupted.
  3. The voltage supply at the diagnostic socket (circuit 30 and/or circuit 31) is faulty.

Note:
When using SDconnect, check the connection status via the Toolkit.

super mb pro m6 initialization of diagnosis multiplexer failed

The solution:

This error indicates abnormal software communication in MB PRO M6+.

Steps to Fix:

  • Ensure the IP settingsfor the USB or Ethernet communication port are correctly configured. Refer to the user manual for guidance.
  • Check if the computer firewallis disabled, as it may interfere with communication. (Refer to the image below for firewall deactivation steps.)

super mb pro m6 initialization of diagnosis multiplexer failed 2

Following these steps should restore proper communication for diagnostics.

 

Tech support:

Email: sales@eOBDTool.co.uk

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Skype: Eobdtool.co.uk

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