2013 Subaru Forester X LimitedFACTORY OEM SERVICE PROCEDURE

Occupant Detection System DTCS

OCCUPANT DETECTION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Reference
2A System calibration (Rezeroing) was not completed normally. < Refer to DTC 2A ODS CALIBRATION ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
2B
  • Wrong airbag control module is installed.
  • Wrong occupant detection system is installed.
  • Occupant detection system is faulty.
 < Refer to DTC 2B ODS SYSTEM WRONG PARTS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
2C
  • Passenger's seat belt tension sensor is faulty.
  • Airbag rear harness circuit is open or shorted.
  • Occupant detection system is faulty.
  • Occupant detection harness is faulty.
 < Refer to DTC 2C BELT TENSION SENSOR FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
27
  • Occupant detection control module and airbag control module communication is faulty.
  • Airbag rear harness circuit is open, shorted, shorted to ground or shorted to power supply.
  • Occupant detection harness is faulty.
  • Occupant detection system is faulty.
  • Airbag control module is faulty.
 < Refer to DTC 27 ODS COMMUNICATION ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
29
  • Occupant detection sensor is faulty.
  • Occupant detection control module is faulty.
  • Occupant detection harness is faulty.
  • Fuse No. 25 (in joint box) is blown.
 < Refer to DTC 29 ODS FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
37
  • Passenger's buckle switch circuit is open, shorted or shorted to ground.
  • Occupant detection system is faulty.
  • Occupant detection harness is faulty.
 < Refer to DTC 37 BUCKLE SWITCH RH FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
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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.