DTC U3000-42: Connectivity Master Unit (CMU) Internal Malfunction [Connectivity Master Unit]: Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC U3000:42 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Connectivity master unit (CMU) internal malfunction
Detection condition	The connectivity master unit (CMU) detects a connectivity master unit (CMU) internal memory malfunction for 1 s.
Fail-safe	The connectivity master unit (CMU) does not launch.
Possible cause	Connectivity master unit (CMU) internal malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable