DTC B1620/21: Side Airbag Sensor RH Circuit Malfunction; DTC B1622/81: Lost communication with Side Airbag Sensor RH [08/2014 - ]: Description

for DTC B1620/21:

The side airbag sensor RH (for rear side) consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.

DTC B1620/21 is recorded when a malfunction is detected in the side airbag sensor RH (for rear side) circuit.

for DTC B1622/81:

The circuit for the side collision sensor RH to determine deployment of the curtain shield airbag RH is composed of the center airbag sensor assembly, side airbag sensor RH (for front side) and side airbag sensor RH (for rear side).

The side airbag sensor RH (for front side) and side airbag sensor RH (for rear side) detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1622/81 is recorded when a malfunction is detected in the circuit for the side collision sensor RH (for rear side) to determine deployment of the curtain shield airbag RH.