DTC U213C-00: Communication Error With DSC HU/Cm (Telematics Communication 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 U213C:00 (TELEMATICS COMMUNICATION UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with DSC HU/CM
Detection condition	The telematics communication unit cannot receive a CAN signal from the DSC HU/CM.
Fail-safe	Not applicable
Possible cause	Malfunction in CAN communication line between the DSC HU/CM and telematics communication unit DSC HU/CM malfunction Telematics communication unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable