Diagnostic Procedure (3.5L)

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: To erase DTC's, see CLEARING DIAGNOSTIC TROUBLE CODES , for DTC P0171 or DTC P0174, see DTC P0171: FUEL INJECTION SYSTEM TOO LEAN - BANK 1 OR DTC P0174: FUEL INJECTION SYSTEM TOO LEAN - BANK 2 for DTC P0172 or DTC P0175, 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 (3.5L) and for intermittents, see TROUBLE SHOOTING - NO CODES article.

For diagnostic procedure, see Fig 1-Fig 3 .

Fig 1: Identifying Diagnostic Procedure For DTC P0139 Or DTC P0159: HO2S2 (Steps 1-2 Of 6)

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

Fig 2: Identifying Diagnostic Procedure For DTC P0139 Or DTC P0159: HO2S2 (Step 3 Of 6)

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

Fig 3: Identifying Diagnostic Procedure For DTC P0139 Or DTC P0159: HO2S2 (Steps 4-6 Of 6)

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