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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 P0190: 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.)

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

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

    (The electrically-controlled cooling fan coupling circuit is open or shorted)

  • Fuel rail pressure sensor
  • Power steering pressure sensor
  • Low fuel pressure sensor
  • Electrically-controlled cooling fan coupling