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Home >> Subaru >> 2021 >> Crosstrek Limited >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B16F3: Front Sub Sensor LH Recognition Error

DTC B16F3: Front Sub Sensor LH Recognition Error

Diagnosis start condition: 

When the ignition voltage is 10 - 16 V.

DTC detecting condition: 

Front sub sensor LH is wrongly installed.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref to. AIRBAG (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. REPLACE FRONT SUB SENSOR  .
    1. Turn the ignition switch to OFF, and wait for 60 seconds or more after disconnecting the ground terminal from the battery sensor. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
      NOTE: For the hybrid model, turn the ignition switch to OFF, and wait for 60 seconds or more after disconnecting the ground terminal from the battery.
    2. Replace the front sub sensor LH with a genuine sensor. Ref. to AIRBAG SYSTEM>FRONT SUB SENSOR>REMOVAL .

    Does the warning light go off?

    Yes:  Finish the diagnosis.

    No:  Replace the airbag control module, Ref. to AIRBAG SYSTEM>AIRBAG CONTROL MODULE>REMOVAL .