DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti M56. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If DTC P0087 is displayed with DTC P0090 and/or P1197, first perform the trouble diagnosis for DTC P0090 and/or P1197.
DTC P0087 may be displayed when running out of gas or air accumulation.

DTC No.	Trouble diagnosis name (Trouble diagnosis content)	DTC detecting condition	Possible cause
P0087	LOW FUEL PRES (High fuel pressure too low)	Fuel rail pressure does not reach 1.3 MPa (13.3 kg/cm² , 188.5 psi) at engine cold start [water temperature 5°C (41°F) - 40°C (104°F)]. Fuel rail pressure remains at 8.5 MPa (86.7 kg/cm² , 1232.8 psi) or less for 1 second or more during engine idle condition after cold start [water temperature 5°C (41°F) - 40°C (104°F)]. The following condition continues for 5 seconds or more after engine start (regardless of water temperature): Target fuel pressure - Actual fuel pressure ≥ 2.7 MPa (27.5 kg/cm² , 392 psi).	Fuel system Leakage in fuel line High pressure fuel pump Low pressure fuel pump Damage in lifter