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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2408 (Engine Control System - DTCS P0181 To P0550 (VK56DE)) >> DTC P0420, P0430: Three Way Catalyst Function >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
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.

WITH CONSULT

TESTING CONDITION: 

Do not hold engine speed for more than the specified minutes below  .

  1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT.
  2. Start engine and warm it up to the normal operating temperature.
  3. Turn ignition switch OFF and wait at least 10 seconds.
  4. Turn ignition switch ON.
  5. Turn ignition switch OFF and wait at least 10 seconds.
  6. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
  7. Let engine idle for 1 minute.
  8. Check that "COOLAN TEMP/S" indicates more than 70°C (158°F).

    If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches 70°C (158°F).

  9. Open engine hood.
  10. Select "DTC&SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT.
  11. Rev engine between 2, 000 and 3, 000 RPM and hold it for 3 consecutive minutes, then release the accelerator pedal completely.

    If "INCMP" of "CATALYST" changed to "CMPLT", go to step  14.

  12. Wait 5 seconds at idle.
  13. Rev engine between 2, 000 and 3, 000 RPM and maintain it until "INCMP" of "CATALYST" changes to "CMPLT" (It will take approximately 5 minutes).

    If not "CMPLT", stop engine and cool it down to less than 70°C (158°F), and then retest from step 1.

  14. Select "SELF-DIAG RESULTS" mode with CONSULT.
  15. Check 1st trip DTC.

If the 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".