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 engine control module (ECM) provides a 5V supply and ground to the AC pressure sensor circuit. The AC pressure sensor provides a signal to the ECM. The ECM monitors the AC pressure signal voltage to diagnose the condition of the sensor circuit.