how to troubleshoot Tesla Model S Plaid/Refresh (2021-present) with B1000 error code

Solution

1. Preparation

• Gather tools and equipment: OBD-II scanner, multimeter, socket set, and a torque wrench.
• Ensure the vehicle is parked on a level surface with the parking brake engaged.

2. Inspect Battery Connections

• Sub-steps:
  • Disconnect the negative terminal of the 12V battery to ensure safety.
  • Visually inspect the high-voltage battery connections for tightness and signs of corrosion.
  • Clean any corrosion using a wire brush or terminal cleaner.
  • Reconnect the battery terminal securely.

3. Check Battery Management System

• Sub-steps:
  • Reconnect the 12V battery and turn the vehicle to the 'On' position without starting.
  • Access the BMS settings via the Tesla service menu or OBD-II scanner.
  • Review the battery cell voltages and temperatures for discrepancies.
  • If necessary, replace any faulty battery management sensors.

4. Perform Voltage Testing

• Sub-steps:
  • Use the multimeter to measure the voltage of individual battery cells.
  • Compare the readings to the manufacturer's specifications for normal operating conditions.
  • Identify any cells that are significantly out of range, which may indicate a failing cell.

5. Software Update

• Sub-steps:
  • Connect the vehicle to Wi-Fi and check for available software updates in the settings.
  • Follow the on-screen prompts to download and install any updates.
  • After the update is complete, monitor the system for recurring error codes.