how to fix B1234 code in Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Inspect and Repair Wiring

• Tools Required: Wire strippers, electrical tape, soldering iron (if needed)
• Remove any protective coverings to access the battery temperature sensor wiring.
• Check for frayed wires or connectors. Repair any damaged wires by splicing in new wire or using electrical tape to insulate exposed areas.
• Reconnect any loose connectors securely.

3. Replace Battery Temperature Sensor (if necessary)

• Tools Required: Socket set, torque wrench
• Locate the battery temperature sensor on the battery pack.
• Remove the bolts securing the sensor using a socket set.
• Disconnect the electrical connector from the sensor.
• Install the new battery temperature sensor by reversing the removal steps and ensuring it is torqued to the manufacturer's specifications.
• Reconnect the electrical connector securely.

4. Reconnect Battery and Check System

• Reconnect the negative terminal of the battery.
• Start the vehicle and allow it to reach operating temperature.
• Perform a scan to ensure the B1234 code is cleared and monitor for any reoccurrence.