2018 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE

Occupant Detection System DTCS

OCCUPANT DETECTION SYSTEM TROUBLE CODE DESCRIPTION

DTC Item
B1650 Occupant classification system malfunction
B1655 Front Buckle Switch RH Failure
B1760 Sensor mat abnormal
B1761 Sensor mat liquid coating abnormal
B1771 Buckle switch malfunction
B1795 ECM internal circuit fault
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

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

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