DTC C0031-14: Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)

Confirmation Procedure	Operating Condition: 1. Start the engine.
Execution	Initial Diagnosis/Regular Diagnosis
Duration	About 1 second
DTC Type	1 drive cycle Brake system indicator on (If multiple wheel failures are detected) ABS indicator on
Fail Safe Action	Stop EBD function (If multiple wheel failures are detected) Stop ABS function

Possible Cause

Open, Short to ground or Short to power between the ABS modulator-control unit and the left-front wheel speed sensor (FR L ABS SNSR+, FR L ABS SNSR- lines)
Short to another line between the ABS modulator-control unit and the left-front wheel speed sensor (FR L ABS SNSR+, FR L ABS SNSR- lines)
Left-front wheel speed sensor failure
ABS modulator-control unit internal failure