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 fuel pressure sensor on the sensor supply circuit. The Fuel pressure sensor provides a signal to the ECM on the fuel pressure sensor signal circuit. This sensor monitors the fuel pressure from the low fuel pressure system (lift pump to the stage 2 filter).