2016 Lexus LS 460 Base, AWDFACTORY OEM SERVICE PROCEDURE

Occupant Classification System

OCCUPANT CLASSIFICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Detection Item Refer To
B1771 Passenger Side Buckle Switch Circuit Malfunction Refer to DTC B1771: Passenger Side Buckle Switch Circuit Malfunction [09/2015 - ]
B1773 Belt Tension Sensor Circuit Malfunction Refer to DTC B1773: Belt Tension Sensor Circuit Malfunction; DTC B1776: Seat Belt Tension Sensor Power Source Circuit Malfunction [09/2015 - ]
B1774 Pressure Sensor Circuit Malfunction Refer to DTC B1774: Pressure Sensor Circuit Malfunction; DTC B1775: Pressure Sensor Power Source Circuit Malfunction [09/2015 - ]
B1775 Pressure Sensor Power Source Circuit Malfunction Refer to DTC B1774: Pressure Sensor Circuit Malfunction; DTC B1775: Pressure Sensor Power Source Circuit Malfunction [09/2015 - ]
B1776 Seat Belt Tension Sensor Power Source Circuit Malfunction Refer to DTC B1773: Belt Tension Sensor Circuit Malfunction; DTC B1776: Seat Belt Tension Sensor Power Source Circuit Malfunction [09/2015 - ]
B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction Refer to DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction [09/2015 - ]
B1795 Occupant Classification ECU Malfunction Refer to DTC B1795: Occupant Classification ECU Malfunction [09/2015 - ]
B1797 Calibration Malfunction Refer to DTC B1797: Calibration Malfunction [09/2015 - ]
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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