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Home >> Infiniti >> 2013 >> M56 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0190 To P1084 >> DTC P0191: FRP Sensor >> DTC Logic >> 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/cm2 , 2102.5 psi) for 0.2 seconds or more during ignition ON.
  • Harness or connectors (Fuel rail pressure sensor circuit is open or shorted.)

    (Power steering pressure sensor circuit is open or shorted.)

    (Low fuel pressure sensor circuit is open or shorted.)

    (Engine oil pressure sensor circuit is open or shorted.)

  • Fuel rail pressure sensor
  • Power steering pressure sensor
  • Low fuel pressure sensor
  • Engine oil pressure sensor