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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 C0044-1C, C0044-28, C0044-49, C0044-54, C0044-56, C0044-64, C0044-84 Or C0044-85: Brake Fluid Pressure Sensor [DSC HU/Cm] >> Outline

DTC C0044-1C, C0044-28, C0044-49, C0044-54, C0044-56, C0044-64, C0044-84 Or C0044-85: Brake Fluid Pressure Sensor [DSC HU/Cm]: Outline

DTC C0044:1C, C0044:28, C0044:49, C0044:54, C0044:56, C0044:64, C0044:84 OR C0044:85 (DSC HU/CM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Brake fluid pressure sensor
Detection condition
  • C0044:1C
    • The DSC HU/CM detects that the supply voltage to the brake fluid pressure sensor is outside of the specification.
  • C0044:28
    • The DSC HU/CM detects that the offset amount of the brake fluid pressure signal is outside of the specification.
  • C0044:49
    • The DSC HU/CM detects any of the following conditions.
  • Brake fluid pressure sensor supply voltage malfunction
    • Brake fluid pressure sensor internal malfunction or poor functioning
    • C0044:54
      • The DSC HU/CM detects that the brake fluid pressure sensor initialization was not implemented.
  • C0044:56
    • The DSC HU/CM and brake fluid pressure sensor configuration information do not match.
  • C0044:64
    • The DSC HU/CM detects a non-conformity in any of the following signals.
  • Brake fluid pressure signals of 2 systems received from brake fluid pressure sensor
    • Brake fluid temperature signals of 2 systems received from brake fluid pressure sensor
    • C0044:84
      • The DSC HU/CM detects that the brake fluid pressure signal of 1 out of the 2 brake fluid pressure sensors is the specification or less.
  • C0044:85
    • The DSC HU/CM detects that the brake fluid pressure signal of 1 out of the 2 brake fluid pressure sensors is the specification or more.
Fail-safe Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [DSC HU/CM (US)] .)
Possible cause
  • The initialization procedure for the brake fluid pressure sensor has not been performed.
  • Brake fluid pressure sensor malfunction
  • Open or short circuit in the brake fluid pressure sensor circuit in DSC HU/CM
System wiring diagram Not applicable
Connector diagram Not applicable