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Home >> Infiniti >> 2020 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 5) >> Engine (ECM) >> DTC P0191: FRP Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0191

Fuel rail pressure sensor

Fuel rail pressure remains at more than 14.5 MPa (147.9 kg/cm 2 , 2102.5 psi) for 0.2 seconds or more during ignition ON.

  • Harness or connectors

    (Fuel rail pressure sensor circuit is open or shorted.)

  • Fuel rail pressure sensor
  • Sensor power supply 3