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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (Coupe) (1 Of 5) >> Airbag System >> DTC B162B/81: Side Airbag Sensor Assembly No. 2 Lost Communication (RH); DTC B162C/85: Side Airbag Sensor Assembly No. 2 Initialization Error (RH) [03/2017 - 04/2020] >> Description

DTC B162B/81: Side Airbag Sensor Assembly No. 2 Lost Communication (RH); DTC B162C/85: Side Airbag Sensor Assembly No. 2 Initialization Error (RH) [03/2017 - 04/2020]: Description

The side collision sensor RH circuit consists of the airbag ECU assembly, door side airbag sensor RH, side airbag sensor assembly RH and rear airbag sensor RH.

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

These DTCs are stored when a malfunction is detected in the side collision sensor RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B162B/81 Side Airbag Sensor Assembly No. 2 Lost Communication (RH)
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.
  • Side airbag sensor assembly RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Side airbag sensor assembly RH
  • Airbag ECU assembly
Comes on Not applicable
B162C/85 Side Airbag Sensor Assembly No. 2 Initialization Error (RH)
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit.
  • Side airbag sensor assembly RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Side airbag sensor assembly RH
  • Airbag ECU assembly
Comes on Not applicable