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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0223 (For MEXICO) >> DTC P0087: FRP Control System >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

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 bar, 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 (85 bar, 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 bar, 27.5 kg/cm2 , 392 psi).
  • Fuel system
  • Leakage in fuel line
  • High pressure fuel pump
  • Low pressure fuel pump
  • Damage in lifter
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