1999 Nissan Pathfinder P0340, P0325, P0139, P0158, P0159, P0160, P1336, P1491 - Won't Start After Fuel Filter and Pump Replacement

Model: 1999 Nissan Pathfinder Fault Code: P0325 Posted: 2016-04-25 15:16

I recently received the following diagnostic trouble codes (DTCs) from an auto parts store: P0340, P0325, P0139, P0158, P0159, P0160, P1336, and P1491. I replaced the fuel filter and fuel pump as recommended, but the vehicle still won't start. It previously exhibited symptoms of sputtering and difficulty accelerating. The codes indicate multiple issues: P0340 - Camshaft Position Sensor (CMP) malfunction P0325 - Knock sensor (KS) failure P1336 - Crankshaft Position Sensor (CKP) issue P0139, P0158, P0159, P0160 - Oxygen sensor circuit problems (post-catalyst sensors) P1491 - Evaporative Emission System (EVAP) vacuum system fault Despite the fuel system repair, the vehicle now fails to start. Given the complexity of these codes—especially involving critical engine position sensors and oxygen sensor circuits—I believe professional diagnostic tools and expertise are required for a proper resolution.