my Tesla Model 3 Highland (2024-present) has a check engine light with code C0031, what should I do?

Solution

1. Preparation

• Gather necessary tools and replacement parts.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the vehicle's battery to prevent electrical shorts.

2. Inspect and Replace Wheel Speed Sensor

• Tools Required: Socket set, multimeter, torque wrench, OBD-II scanner.
• Remove the wheel to access the wheel speed sensor.
  • Use the socket set to loosen and remove the lug nuts.
  • Carefully lift the vehicle using a jack and secure with jack stands.
• Locate the wheel speed sensor on the hub assembly.
• Disconnect the electrical connector from the wheel speed sensor.
• Remove the mounting bolts securing the wheel speed sensor to the hub.
• Carefully pull out the old sensor from its housing.
• Install the new wheel speed sensor by reversing the removal steps.
  • Ensure the sensor is seated correctly and tighten bolts to the manufacturer's torque specifications.
• Reconnect the electrical connector to the new wheel speed sensor.
• Reinstall the wheel and securely fasten the lug nuts.

3. Reset the Check Engine Light

• Reconnect the vehicle's battery.
• Use the OBD-II scanner to clear the check engine light and any stored DTCs.
• Perform a system check to ensure that the code does not reappear.