how to diagnose B2273 code in Tesla Model 3 Highland (2024-present)

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and is powered off.
• Disconnect the negative terminal of the battery to prevent any electrical shorts.
• Gather necessary tools and parts.

2. Inspect and Clean Charging Port

• Sub-steps:
  1. Remove any debris or dirt from the charging port using a soft brush or compressed air.
  2. Inspect the pins inside the charging port for corrosion or damage.
  3. Clean the pins gently with electrical contact cleaner if corrosion is present.
• Tools Required: Soft brush, compressed air, electrical contact cleaner.

3. Test and Replace Charge Cable

• Sub-steps:
  1. Use a multimeter to check for continuity in the charge cable.
  2. If any faults are found, replace the charge cable with a new OEM part.
  3. Reconnect the charge cable securely and test for proper operation.
• Tools Required: Multimeter.

4. Update Battery Management System Software

• Sub-steps:
  1. Access the Tesla Service Tool and navigate to the software update section.
  2. Follow the prompts to check for and install any available updates for the battery management system.
• Tools Required: Tesla Service Tool.

5. Reconnect Battery

• After completing all steps, reconnect the negative battery terminal securely.
• Ensure all connections are tight and there are no loose wires.