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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 To P0463 >> DTC P0451: EVAP Control System Pressure Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0451 EVAP SYS PRES SEN (EVAP control system pressure sensor performance) ECM detects a sloshing signal from the EVAP control system pressure sensor
  • (EVAP control system pressure sensor circuit is shorted.)

    Harness or connectors

    (Battery current sensor circuit is open or shorted.)

    (Accelerator pedal position sensor 2 circuit is shorted.)

    [Camshaft position sensor (bank 1) circuit is shorted.]

    (Crankshaft position sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • EVAP control system pressure sensor
  • Battery current sensor
  • Accelerator pedal position sensor
  • Camshaft position sensor (bank 1)
  • Crankshaft position sensor
  • Refrigerant pressure sensor