DTC Description: Notes
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
The ASCD steering switch contains a signal and ground which are input to the ECM. When a switch is pressed, a voltage signal is sent to the ECM. The ECM monitors the voltage to determine if the switch is stuck, or the signal circuit is shorted.