2003 Nissan altima misfire 2003 Nissan Altima Misfire -code 301 - YouTube Apr 23, 2014 · I had to replace a valve cover and ignition coil because of code 301 for cylinder 1 misfire 2003 Nissan Altima. P0302 Misfire. -... Source Source Source Source Source Source Source Source Source Source Read Also: 2003 Nissan altima cylinder misfire Cylinder 1 misfire 2003 nissan altima Nissan altima misfire 2003 Nissan altima cylinder 4 misfire Nissan altima cylinder misfire Nissan altima misfiring