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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0453: EVAP Control System Pressure Sensor >> Diagnostic Procedure >> 1. Check Ground Connections

1. Check Ground Connections

  1. Turn ignition switch OFF.
  2. Loosen and retighten two ground screws.

    Refer to GROUND INSPECTION .

    Fig 1: Identifying Engine Ground Wires
    G00796093Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

  1. OK: GO TO 2.
  2. NG: Repair or replace ground connections.