DTC U0301-00: Brake Disc Temperature Too High [DSC HU/Cm]: 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.

System malfunction location	Brake disc temperature too high
Detection condition	The DSC HU/CM detects that the brake disc temperature is high.
Fail-safe	Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [DSC HU/CM (US)] .)
Possible cause	Use of frequent braking Continuous Mazda Radar Cruise Control (MRCC) operation
System wiring diagram	Not applicable
Connector diagram	Not applicable