Diagnostic 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: To erase DTC from memory, 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 heated oxygen sensor 1 heater component inspection, see COMPONENT INSPECTION under DTC P0031, DTC P0032, DTC P0051 OR DTC P0052: HO2S1 HEATER, for mass air flow component inspection, see COMPONENT INSPECTION under DTC P0101: MASS AIRFLOW SENSOR, for PCV valve component inspection, see POSITIVE CRANKCASE VENTILATION in SYSTEM & COMPONENT TESTING article, for heated oxygen sensor 1 component inspection, see COMPONENT INSPECTION (2.5L) and for intermittents, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.

For diagnostic procedure (2.5L), see Fig 1 - Fig 3 .

Fig 1: Identifying Diagnostic Procedure For DTC P0133: HO2S1 (Steps 1-3 Of 12 - 2.5L)

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

Fig 2: Identifying Diagnostic Procedure For DTC P0133: HO2S1 (Steps 4-6 Of 12 - 2.5L)

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

Fig 3: Identifying Diagnostic Procedure For DTC P0133: HO2S1 (Steps 7-12 Of 12 - 2.5L)

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