what does it mean if my Tesla Model 3 Highland (2024-present) has a C0031 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Wheel Speed Sensor

1. Access the Wheel Speed Sensor:

   • Remove the left front wheel using a socket set and jack stands for safety.
   • Locate the wheel speed sensor at the hub assembly.

2. Disconnect the Sensor:

   • Unplug the electrical connector from the wheel speed sensor by pressing the release tab and pulling it apart.
   • Note the orientation of the connector for reinstallation.

3. Remove the Old Sensor:

   • Unscrew the mounting bolt securing the wheel speed sensor using a socket set.
   • Pull the sensor out from its housing carefully to avoid damage.

4. Install the New Sensor:

   • Insert the new wheel speed sensor into the housing and tighten it to the manufacturer's specified torque setting (usually around 7-12 Nm).
   • Reconnect the electrical connector ensuring it clicks into place.

3. Check and Clean the Tone Ring

1. Inspect the Tone Ring:
   • Examine the tone ring for any cracks or debris. Clean with a soft cloth if necessary.
   • Replace the tone ring if damaged.

4. Reconnect Battery and Test

• Reconnect the battery terminal securely.
• Clear any diagnostic codes using the OBD-II scanner.
• Perform a test drive to confirm the issue is resolved.