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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (6 Of 7) >> Airbag System >> DTC B166C: Front Door Pressure Sensor RH; DTC B166F: Front Door Pressure Sensor Threshold Malfunction (RH) [12/2019 - 11/2023] >> Description

DTC B166C: Front Door Pressure Sensor RH; DTC B166F: Front Door Pressure Sensor Threshold Malfunction (RH) [12/2019 - 11/2023]: Description

The side collision sensor RH circuit (bus 1) consists of the airbag sensor assembly, side airbag sensor assembly RH and rear airbag sensor RH.

The side airbag sensor assembly RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbags, pretensioners and selectable force limiter should be deployed.

These DTCs are stored when a malfunction is detected in the side airbag sensor assembly RH.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B166C Front Door Pressure Sensor RH
  • Side airbag sensor assembly RH malfunction
  • Airbag sensor assembly malfunction
  • Side airbag sensor assembly RH
  • Airbag sensor assembly
Comes on Does not apply to test/check mode
B166F Front Door Pressure Sensor Threshold Malfunction (RH)
  • Side airbag sensor assembly RH malfunction
  • Airbag sensor assembly malfunction
  • Side airbag sensor assembly RH
  • Airbag sensor assembly
Comes on Does not apply to test/check mode