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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0139: Ho2S2 Circuit Slow Response - Bank 1 Or DTC P0159: Ho2S2 Circuit Slow Response - Bank 2 >> Diagnostic Procedure (2.5L)

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's 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 component inspection, see COMPONENT INSPECTION  and for intermittents, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.

For diagnostic procedure, see Fig 1-Fig 2 .

Fig 1: Identifying Diagnostic Procedure For DTC P0139: HO2S2 (Steps 1-3 Of 6)
G00250745Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying Diagnostic Procedure For DTC P0139: HO2S2 (Steps 4-6 Of 6)
G00250746Courtesy of NISSAN MOTOR CO., U.S.A.
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