DTC Confirmation Procedure (2.5L)
WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If DTC confirmation procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
NOTE:
For the best results, perform DTC confirmation at a temperature of 32-86°F (0-30°C). Open engine hood before conducting following procedure.
With CONSULT-II
- Start engine and warm to normal operating temperature.
- Turn ignition switch OFF and wait at least 10 seconds.
- Start engine and keep the engine speed between 3500 and 4000 RPM for at least 1 minute under no load.
- Let engine idle for 1 minute.
- Select "HO2S2 (B1) P0139" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II and follow the instruction of CONSULT-II. See Fig 1.
- Ensure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, see DIAGNOSTIC PROCEDURE (2.5L) . If "CAN NOT BE DIAGNOSED" is displayed, perform the following:
- Turn ignition switch OFF and leave the vehicle in a cool place, soak the vehicle.
- Turn ignition switch ON and select "COOLANTEMP/S" in "DATA MONITOR" mode with CONSULT-II.
- Start engine and warm it up while monitoring "COOLANTEMP/S" indication on CONSULT-II.
- When "COOLANTEMP/S" indication reaches to 158°F (70°C), go to step 3.