DTC C0030-38: Left Front Tone Wheel - Signal frequency incorrect: Action

NOTE: After clearing the DTCs, the warning indicator(s) may not extinguish until the vehicle speed has exceeded 10mph (15kph)

Check the integrity of the front left wheel speed sensor reluctor ring
Check the front left wheel bearing
Check that the wheels and tires comply with the manufacturer's specification for the vehicle. Check the front left wheel and tire for condition and balance. Check and tighten the wheel nuts