how to fix B0141 code in Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, and basic hand tools.
• Ensure the vehicle is parked on a flat surface and the ignition is off.
• Disconnect the negative battery terminal to prevent accidental airbag deployment.

2. Inspect Wiring and Connectors

• Remove the passenger seat:
  • Use a socket set to unscrew the bolts securing the seat to the floor.
  • Disconnect the electrical connectors under the seat.
• Inspect the wiring harness for any frays, cuts, or corrosion.
• Check that all connectors are firmly seated and not damaged.

3. Replace the Passenger Seat Sensor

• If the wiring is intact but the code persists, replace the passenger seat occupancy sensor:
  • Remove the old sensor by disconnecting it from the wiring harness.
  • Install the new sensor, ensuring it clicks into place securely.
• Reconnect the seat connectors and re-install the passenger seat.

4. Clear Diagnostic Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the B0141 code from the vehicle's memory.
• Start the vehicle and verify that the airbag warning light does not illuminate.