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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1165 (Engine Control System - Qr25DE) >> DTC P0037, P0038: Ho2S2 Heater >> Diagnostic Trouble Code (DTC) Confirmation Procedure >> Testing Condition: >> With GST

With GST

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
  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 1 minute.
  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. Select MODE 3 with GST.
  9. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".