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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0190, P0192, P0193: FRP Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0190 Fuel rail pressure sensor circuit low input and high input Signal voltage from the fuel rail pressure sensor remains at more than 4.84 V / less than 0.2 V for 5 seconds or more.
  • Harness or connectors

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

  • Fuel rail pressure sensor
  • Sensor power supply 3
P0192 Fuel rail pressure sensor circuit low input Signal voltage from the fuel rail pressure sensor remains at less than 0.37 V for 5 seconds or more.
P0193 Fuel rail pressure sensor circuit high input Signal voltage from the fuel rail pressure sensor remains at more than 3.46 V for 5 seconds or more.