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Home >> Nissan-Datsun >> 2004 >> Quest SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> DTC P0405, P0406: EGRT Sensor >> DTC Confirmation Procedure >> Testing Condition: >> With GST
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With GST

  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
  3. Select MODE 1 with GST and maintain the following conditions for at least 5 consecutive seconds.
    Fig 1: Checking Reference Chart
    G00775393Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Select MODE 7 with GST.
  5. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE  .