DTC Detection Logic

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) detected the fuel rail pressure is greater than the commanded fuel rail pressure by 200 bar (2900 psi); or fuel rail gauge pressure exceeded 2150 bar (31, 500 psi).

NOTE: CONSULT displays fuel supply pressure as absolute pressure. Subtract 101 kPa (1.03 Kg/cm ² , 14.7 psi) at sea level from the CONSULT fuel supply pressure reading to approximate the gauge pressure reading.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0088-00	HIGH_FUEL_PRES (Fuel Rail/System Pressure - Too High)	Diagnosis condition	Engine running
		Signal (terminal)	(-)
		Threshold	Commanded fuel rail pressure - actual fuel rail pressure < reftable9 bar. High pressure pump delivery volume set point ≥ 0 m3/sec. OR Commanded fuel rail pressure - actual fuel rail pressure < -200 bar. Pressure control valve (PCV) set point value < 10 bar.
		Diagnosis delay time	This diagnostic runs continuously when the engine is running.