With Consult-II

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

Start engine and warm it up to normal operating temperature.
Turn ignition switch OFF and wait at least 10 seconds.
Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
Let engine idle for 1 minute.
Select "A/F SEN1(B1) P1278/P1279" or "A/F SEN1(B1) P1288/P1289" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.

Fig 1: CONSULT-II A/F SEN1(B1) P1278/P1279 Display
Courtesy of NISSAN MOTOR CO., U.S.A.
Touch "START".
If "COMPLETED" appears on CONSULT-II screen, go to step 10.

If "COMPLETED" does not appear on CONSULT-II screen, go to the following step.
After perform the following procedure, "TESTING" will be displayed on the CONSULT-II screen.

Fig 2: CONSULT-II A/F SEN1(B1) P1278/P1279 Display
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Increase the engine speed up to 4, 000 to 5, 000 RPM and keep it for 10 seconds.
2. Fully release accelerator pedal and then let engine idle for about 10 seconds.
  If "TESTING" is not displayed after 10 seconds, refer to " TROUBLE DIAGNOSIS - SPECIFICATION VALUE " .
Wait for about 20 seconds at idle at under the condition that "TESTING" is displayed on the CONSULT-II screen.
Make sure that "TESTING" changes to "COMPLETED".

Fig 3: CONSULT-II A/F SEN1(B1) P1278/P1279 Display
Courtesy of NISSAN MOTOR CO., U.S.A.

If "TESTING" changed to "OUT OF CONDITION", refer to " TROUBLE DIAGNOSIS - SPECIFICATION VALUE " .
Make sure that "OK" is displayed after touching "SELF-DIAG RESULT".
If "NG" is displayed, go to "DIAGNOSTIC PROCEDURE ".