how to fix B0091 code in Tesla Outback 5th Generation (2015-2019)?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repair.
• Wait at least 10 minutes for the airbag system to discharge.

2. Inspect and Repair Wiring

• Sub-steps:
  • Visually inspect the wiring harness connected to the passenger airbag and the seat occupancy sensor.
  • Look for any frayed wires, loose connections, or corrosion.
  • If damaged wiring is found, repair it using solder and heat shrink tubing or replace the harness as necessary.

3. Replace Seat Occupancy Sensor (if faulty)

• Sub-steps:
  • Remove the seat from the vehicle. This typically involves unbolting the seat from the floor.
  • Disconnect the wiring harness from the sensor located under the seat cushion.
  • Remove the faulty sensor and install the new one in the same position.
  • Reconnect the wiring harness and ensure it is secure.

4. Reconnect Battery and Clear Codes

• Sub-steps:
  • Reconnect the negative battery terminal.
  • Use an OBD-II scanner to clear the B0091 code from the system.
  • Start the vehicle and allow it to run for a few minutes to check for the reappearance of the code.