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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery and wait at least 10 minutes to ensure airbag system is deactivated.

2. Inspect Wiring and Connectors

• Remove the passenger seat (if necessary) to access the airbag connectors.
• Check all wiring for signs of wear, fraying, or corrosion.
• Clean any corrosion on connectors with electrical contact cleaner.

3. Replace Faulty Components

• If the passenger seat occupancy sensor is faulty, remove the sensor from the seat and replace it with a new one.
• If damaged wiring is found, splice in new wiring and ensure all connections are secure.

4. Reassemble and Reconnect

• Reinstall the passenger seat and ensure all bolts are properly torqued (typically 25-30 ft-lbs).
• Reconnect the battery, ensuring all connections are tight and secure.

5. System Reset and Testing

• Use the OBD-II scanner to clear any fault codes.
• Perform a system check to ensure the airbag system is functioning correctly without re-triggering the B0091 code.