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Home >> Lexus >> 2023 >> LS 500h >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (W/O Advanced Park) - Diagnostic Codes (1 Of 3) >> AIRBAG SYSTEM (w/o Advanced Park) >> DTC B163A: Side Airbag Sensor Assembly No. 2 (LH) [10/2020 - 11/2021] >> Description

DTC B163A: Side Airbag Sensor Assembly No. 2 (LH) [10/2020 - 11/2021]: Description

The side collision sensor LH circuit consists of the airbag ECU assembly, door side airbag sensor LH, side airbag sensor assembly LH, rear airbag sensor LH and No. 2 side airbag sensor assembly.

The door side airbag sensor LH, side airbag sensor assembly LH, rear airbag sensor LH and No. 2 side airbag sensor assembly detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioners should be deployed.

DTC B163A is stored when a malfunction is detected in the No. 2 side airbag sensor assembly LH.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B163A Side Airbag Sensor Assembly No. 2 (LH) Either condition is met:
  • A No. 2 side airbag sensor assembly LH malfunction
  • An airbag ECU assembly malfunction
  • No. 2 side airbag sensor assembly LH
  • Airbag ECU assembly
Comes on Not applicable