DTC U0415-86: Check Sum Error Received From DSC HU/Cm [Vehicle Control Module (Us)]: 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 U0415:86 (VEHICLE CONTROL MODULE - US) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Check sum error received from DSC HU/CM
Detection condition	The vehicle control module (VCM) detects that the vehicle control module (VCM) received a check sum error from the DSC HU/CM for 10 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause	DSC HU/CM malfunction Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram	Not applicable
Connector diagram	Not applicable