DTC C0031-3A: Wheel Speed Sensor (Left Front) Signal Failure (Signal Frequency is Too High)

• 12 volt battery voltage 9.6 - 16.5 V

Operating Condition:

• 1.

  Start the engine.

• 2.

  Test-drive the vehicle for 80 seconds or more. (Drive the vehicle on the road, not on a lift. Be careful of the surrounding traffic conditions.)

• 1 drive cycle
• Brake system indicator on (If multiple wheel failures are detected)
• ABS indicator on
• VSA indicator on

• Stop EBD function (If multiple wheel failures are detected)
• Stop ABS function
• Stop engine drag torque control function
• Stop TCS function
• Stop VSA function
• Stop brake assist function
• Stop hill start assist function

• Electrical noise in the left-front wheel speed sensor signal
• Left-front wheel speed sensor incorrect installation
• Damage or debris on the left-front encoder surface
• Left-front wheel speed sensor failure
• VSA modulator-control unit program not the latest
• VSA modulator-control unit internal failure