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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (W/O Advanced Park) - Diagnostic Codes (2 Of 3) >> AIRBAG SYSTEM (w/o Advanced Park) >> DTC B167B: Lost Communication with Front Door Pressure Sensor LH; DTC B167C: Front Door Pressure Sensor LH Initialization Incomplete [10/2020 - 11/2021] >> Description

DTC B167B: Lost Communication with Front Door Pressure Sensor LH; DTC B167C: Front Door Pressure Sensor LH Initialization Incomplete [10/2020 - 11/2021]: Description

The circuit for the side collision sensor LH is composed of the airbag ECU assembly, side airbag sensor assembly LH and door side airbag sensor LH.

The side airbag sensor assembly LH and door side airbag sensor LH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbag should be deployed.

DTC B167B or B167C is stored when a malfunction is detected in the circuit for the side collision sensor LH.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B167B Lost Communication with Front Door Pressure Sensor LH One of the following conditions is met:
  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side collision sensor LH for 2 seconds.
  • A door side airbag sensor LH malfunction.
  • A side airbag sensor assembly LH malfunction.
  • A rear airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Front door wire LH
  • Door side airbag sensor LH
  • Side airbag sensor assembly LH
  • Rear airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable
B167C Front Door Pressure Sensor LH Initialization Incomplete One of the following conditions is met:
  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side collision sensor LH for 2 seconds.
  • A door side airbag sensor LH malfunction.
  • A side airbag sensor assembly LH malfunction.
  • A rear airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Front door wire LH
  • Door side airbag sensor LH
  • Side airbag sensor assembly LH
  • Rear airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable