DTC 2605: H/U Diag Connect

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
This navigation DTC sets when a problem (open or short) is detected in the GA-Net BUS.
Check any official Honda service website for more service information about the navigation system.
Check for B-CAN DTCs and resolve them before troubleshooting.
Before you troubleshoot, make sure to follow the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Clear the hard error code (see HOW TO CLEAR ERROR HISTORY ).
Turn the ignition switch to LOCK (0), and then back to ON (II).
Go into the Diagnostic Menu, and select the Self-Diagnosis Mode in the Select Diagnosis Items menu (see SYSTEM DIAGNOSTIC MODE ).
Select the System Links, then select the Radio.
Is Connection NG indicated?

YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

NO -Intermittent failure, the system is OK at this time.