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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Electronically Controlled Brake System (HV) - Diagnostic Codes (05 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0577-28: Brake Pressure Sensor "D" Signal Bias Level Out of Range / Zero Adjustment Failure [11/2023 - ] >> Description

DTC C0577-28: Brake Pressure Sensor "D" Signal Bias Level Out of Range / Zero Adjustment Failure [11/2023 - ]: Description

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The reaction force pressure sensor detects and outputs the brake fluid pressure of the stroke simulator, which changes in accordance with brake pedal operation, to the No. 1 skid control ECU (brake booster with master cylinder assembly).

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Brake pressure sensor "D": Reaction force pressure sensor

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C0577-28 Brake Pressure Sensor "D" Signal Bias Level Out of Range / Zero Adjustment Failure When the brake pedal is not depressed, the reaction force pressure sensor output value is -0.63 MPa (-6.4 kgf/cm2 , -91.4 psi) or less or 1.53 MPa (15.6 kgf/cm2 , 222 psi) or more for 3 seconds or more. No. 1 skid control ECU (brake booster with master cylinder assembly) Comes on
  • SAE Code: C0578
  • Output ECU: Both skid control ECUs