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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 C05A1-28: Brake Pressure Sensor "E" Signal Bias Level Out of Range / Zero Adjustment Failure [12/2019 - 11/2023] >> Description

DTC C05A1-28: Brake Pressure Sensor "E" Signal Bias Level Out of Range / Zero Adjustment Failure [12/2019 - 11/2023]: Description

WARNING: This page is about a different variant/trim than selected.

The servo pressure sensor detects and transmits the servo pressure adjusted by the regulator to the No. 1 skid control ECU (brake booster with master cylinder assembly) in accordance with the vehicle condition.

HINT: 

Brake pressure sensor "E": Servo pressure sensor

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C05A1-28 Brake Pressure Sensor "E" Signal Bias Level Out of Range / Zero Adjustment Failure When the brake pedal is not depressed, the servo 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: C05A2
  • Output ECU: Both skid control ECUs