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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Qr25DE >> DTC P0138: Ho2S2 >> Diagnostic Trouble Code (DTC) Confirmation Procedure >> With GST
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With GST

  1. Start engine and warm it up to the normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
  4. Let engine idle for 2 minutes.
  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 2 minutes.
  8. Select "Mode 3" with GST.
  9. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".