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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1052 (Engine Control System) >> DTC P1274, P1284: A/F Sensor 1 >> DTC Confirmation Procedure >> Testing Condition: >> With CONSULT-II
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With CONSULT-II

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Turn ignition switch ON and select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II.
  4. Clear the self-learning coefficient by touching "CLEAR".
  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 1 minute under no load.
  7. Let engine idle for 1 minute.
  8. Keep engine speed between 2,500 and 3,000 RPM for 20 minutes.
  9. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE  .
    Fig 1: Identifying Clear Self-Learning Coefficient Touching
    G00775764Courtesy of NISSAN MOTOR CO., U.S.A.
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