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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (DTCS) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0088: FRP Control System >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:

If DTC P0088 is displayed with DTC P0090, first perform the trouble diagnosis for DTC P0090.

DTC No. Trouble diagnosis name
(Trouble diagnosis content)		 DTC detecting condition Possible cause
P0088 HIGH FUEL PRES
(High fuel pressure too high)
  • Fuel rail pressure remains at more than 16.5 MPa (165 bar, 168.3 kg/cm2 , 2392.5 psi) 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): Actual fuel pressure - Target fuel pressure ≥ 2.7 MPa (27 bar, 27.5 kg/cm2 , 392 psi)
  • Harness or connector

    (The high pressure fuel pump circuit is open or shorted)

  • High pressure fuel pump
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