what does it mean if my Tesla Model S Original (2012-2020) has a B10D8 error code

Solution

1. Preparation

• Ensure the vehicle is in a safe location and parked on a flat surface.
• Disconnect the high-voltage battery system for safety.
• Gather necessary tools including a multimeter, socket set, and any replacement parts.

2. Inspect Battery Temperature Sensors

• Locate the battery temperature sensors, typically found near the battery pack.
• Carefully disconnect the wiring harness from each temperature sensor.
• Inspect the sensors for any signs of wear, corrosion, or damage.
• If damage is found, proceed to replace the sensors.

3. Replace Faulty Temperature Sensors

• Remove the old temperature sensor using the appropriate socket size.
• Install the new temperature sensor, ensuring it is securely fastened.
• Reconnect the wiring harness ensuring a proper connection.

4. Verify Battery Cooling System

• Check coolant levels in the battery cooling system; top up if necessary with the specified Tesla coolant.
• Inspect the cooling fans for proper function; replace if they are not operational.

5. Reconnect Battery and Test

• Reconnect the high-voltage battery system.
• Power on the vehicle and allow it to run through a self-check.
• Use the Tesla service tool to clear the B10D8 code and check if it reappears after driving.