C1020

DTC C1020 / C1028: Master Cylinder Pressure Sensor Power Supply Circuit Failure / Circuit Failure

DTC Detecting Condition and Trouble Area






DTC Troubleshooting

1.
Was "Electronic Stability Program Check" performed?
YES -
Go to Step 2.
NO -
Go to (ESP) Check Electronic Stability Program Check.

2. Check ESP(R) hydraulic unit / control module assembly power and ground circuit

Check that ESP(R) hydraulic unit / control module assembly power supply circuit and ground circuit is in good condition referring to ESP Hydraulic Unit / Control Module Assembly Power Supply and Ground Circuit Check ESP(R) Hydraulic Unit / Control Module Assembly Power Supply and Ground Circuit Check.

Are check results OK?
YES -
Substitute a known-good ESP(R) hydraulic unit / control module assembly and recheck.
NO -
Repair ESP(R) hydraulic unit / control module assembly power or ground circuit.