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Home › Nissan-Datsun › 2009 › Quest SE › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS P0447 To P1168 › DTC P0451 EVAP Control System Pressure Sensor › DTC Confirmation Procedure

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next step.
  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.

TESTING CONDITION: 

Perform DTC Confirmation Procedure when the fuel level is between 1/4 and 3/4 full, and vehicle is placed on flat level surface. 

  1. Start engine and wait at least 100 seconds.
    NOTE: Do not depress accelerator pedal even slightly.
  2. Check 1st trip DTC.
  3. If 1st trip DTC is detected, go to , "DIAGNOSIS PROCEDURE ".

    If 1st trip DTC is not detected, go to the next step.

  4. Turn ignition switch OFF and wait at least 10 seconds.
  5. Turn ignition switch ON.
  6. Turn ignition switch OFF and wait at least 10 seconds.
  7. Start engine and wait at least 100 seconds.
    NOTE: Do not depress accelerator pedal even slightly.
  8. Check 1st trip DTC.
  9. If 1st trip DTC is detected, go to , "DIAGNOSIS PROCEDURE ".

    If 1st trip DTC is not detected, go to the next step.

  10. Turn ignition switch OFF and wait at least 10 seconds.
  11. Turn ignition switch ON.
  12. Turn ignition switch OFF and wait at least 10 seconds.
  13. Start engine and wait at least 100 seconds.
    NOTE: Do not depress accelerator pedal even slightly.
  14. Check 1st trip DTC.
  15. If 1st trip DTC is detected, go to , "DIAGNOSIS PROCEDURE ".

    If 1st trip DTC is not detected, go to the next step.

  16. Turn ignition switch OFF and wait at least 10 seconds.
  17. Turn ignition switch ON.
  18. Turn ignition switch OFF and wait at least 10 seconds.
  19. Start engine and wait at least 100 seconds.
    NOTE: Do not depress accelerator pedal even slightly.
  20. Check 1st trip DTC.
  21. If 1st trip DTC is detected, go to , "DIAGNOSIS PROCEDURE ".

    If 1st trip DTC is not detected, go to the next step.

  22. Turn ignition switch OFF and wait at least 10 seconds.
  23. Turn ignition switch ON.
  24. Turn ignition switch OFF and wait at least 10 seconds.
  25. Start engine and wait at least 100 seconds.
    NOTE: Do not depress accelerator pedal even slightly.
  26. Check 1st trip DTC.
  27. If 1st trip DTC is detected, go to , "DIAGNOSIS PROCEDURE ".
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