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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> On-Board Diagnostics - Dynamic Stability Control (DSC) >> DTC U0140-00: Communication Error With Body Control Module (BCM) [DSC HU/Cm] >> Outline

DTC U0140-00: Communication Error With Body Control Module (BCM) [DSC HU/Cm]: Outline

DTC U0140:00 (DSC HU/CM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with body control module (BCM)
Detection condition
  • The DSC HU/CM cannot receive CAN (CAN BUS No. 1) signal from the body control module (BCM).
Fail-safe Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table".
(See DTC TABLE [DSC HU/CM (US)] .)
Possible cause
  • Malfunction in CAN communication line (CAN BUS No. 1) between body control module (BCM) and DSC HU/CM
System wiring diagram Not applicable
Connector diagram Not applicable