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: For APP sensor component inspection, see COMPONENT INSPECTION under DTC P2122 OR P2123: APP SENSOR and for power supply circuit for ECM, see ENGINE CONTROL MODULE in SYSTEM & COMPONENT TESTING article.

For diagnostic procedure, see Fig 1-Fig 3 .

Fig 1: Identifying Diagnostic Procedure For DTC P2138: APP Sensor (Step 1 Of 9)

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

Fig 2: Identifying Diagnostic Procedure For DTC P2138: APP Sensor (Steps 2-5 Of 9)

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

Fig 3: Identifying Diagnostic Procedure For DTC P2138: APP Sensor (Steps 6-9 Of 9)

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