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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 Through P0456 >> DTC P0451: EVAP Control System Pressure Sensor >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

      GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE
    1. Start engine and wait at least 40 seconds.
      NOTE: Do not depress accelerator pedal even slightly.
    2. Check 1st trip DTC.

      Is 1st trip DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END

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