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 circuit is a pulse-width modulation (PWM) driver in the engine control module (ECM) that controls the high pressure common rail fuel pressure relief valve. The high pressure common rail fuel pressure relief valve is grounded in the ECM. The high pressure common rail fuel pressure relief valve is normally open. The PWM duty cycle to the high pressure common rail fuel pressure relief valve depends on the difference between desired rail pressure and sensed rail pressure.