Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at idle speed.
   Fig 1: Identifying Mass Air Flow Sensor

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Stop engine and reconnect mass air flow sensor harness connector.
5. Make sure DTC P0102 is displayed.
6. Erase the DTC memory. Refer to HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION .
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.

   Is the 1st trip DTC P0171, P0174 or P0172, P0175 detected? 

   Is it difficult to start engine? 

Yes or No 

1. Yes: Perform trouble diagnosis for DTC P0171, P0174 or DTC P0172, P0175 (Refer to DTC P0171, P0174: FUEL INJECTION SYSTEM FUNCTION  or DTC P0172, P0175: FUEL INJECTION SYSTEM FUNCTION ).
2. No: GO TO 6.