Diagnostic Procedure

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:

To erase DTC's, see CLEARING DIAGNOSTIC TROUBLE CODES , for DTC P0172, see DTC P0172: FUEL INJECTION SYSTEM TOO RICH - BANK 1 OR DTC P0175: FUEL INJECTION SYSTEM TOO RICH - BANK 2 , for component inspection, see COMPONENT INSPECTION and for intermittents, see TROUBLE SHOOTING - NO CODES article.

For diagnostic procedure, see Fig 1 - Fig 3 .

Fig 1: Identifying Diagnostic Procedure For DTC P1146: HO2S2, Step 1 Of 6 (2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Diagnostic Procedure For DTC P1146: HO2S2, Steps 2-3 Of 6 (2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Identifying Diagnostic Procedure For DTC P1146: HO2S2, Steps 4-6 Of 6 (2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.