Dtc C1421 Open Or Short In Master Cylinder Pressure Sensor

DTC C1421 Open or Short in Master Cylinder Pressure Sensor

DTC C1281 Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC)

DTC C1423 Master Cylinder Pressure Sensor Zero Point Low Malfunction

DTC C1424 Master Cylinder Pressure Sensor Output Malfunction

1. The IG1 terminal voltage is between 9.5 V and 17.0 V.
   
2. The VM/C1 terminal voltage is not within 4.4 V and 5.6 V.
   

1. The VM/C1 terminal voltage is between 4.4 V and 5.6 V.
   
2. The PM/C1 terminal voltage is not within 0.19 V and 4.57 V.
   

1. The stop light switch is off.
   

1. The PM/C1 terminal voltage is below 0.3 V.
   

1. Noise occurs in the signal from the PM/C1 terminal 7 times or more within 5 seconds.
   
2. When the vehicle speed drops from 40 km/h (25 mph) to 10 km/h (6 mph), the master cylinder pressure does not change by at least 0.048 MPa.
   
3. At a vehicle speed of 7 km/h (4 mph) or more, the PM/C1 terminal voltage is between 0.86 and 1.0 V and master cylinder pressure does not change by at least 0.048 MPa for 60 seconds or more.
   
4. At a vehicle speed of 7 km/h (4 mph) or more, the PM/C1 terminal voltage is 1.0 V or more and master cylinder pressure does not change by at least 0.048 MPa for 30 seconds or more.
   
5. At a vehicle speed of 7 km/h (4 mph) or more with the stop light switch ON, a state in which the pressure sensor input value is sufficiently higher than the estimated master pressure continues for 1 second or more and this state occurs 5 or more times each time the ignition switch is turned to ON, and this occurs 8 or more times consecutively.