DTC C05A1-28: Brake Pressure Sensor "E" Signal Bias Level Out of Range / Zero Adjustment Failure [11/2020 - ]: Description
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 | DTC Output from | Priority | 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) | Brake Booster | A | Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
C05A1-28 DTC DETECTION CONDITIONS
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | When the brake pedal is not depressed | ◦ | ◦ |
| Malfunction Status | The servo pressure sensor output value is -0.63 MPa (-6.4 kgf/cm2 , -91.4 psi) or less | ◦ | - |
| The servo pressure sensor output value is 1.53 MPa (15.6 kgf/cm2 , 222 psi) or more | - | ◦ | |
| Detection Time | 3 seconds or more. | 3 seconds or more. | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.