Acura
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AT - kick-down switch always ON
Cause:
    Wiring, kick-down switch, ECM

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Kick down Switch Circuit (4L30-E Transmission) Conditions
Cause:
    DTC P1890 not set, key on and engine running, throttle angle less than 89%, then the ECM sent a Kickdown request to the TCM.

Honda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AT - kick-down switch
Cause:
    Wiring, kick-down switch, ECM

Isuzu
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AT - kick-down switch
Cause:
    Wiring, kick-down switch, mechanical fault