have code 325 and 301, 325 is knock sensor, 301 is misfire on #l plug, what can cause this problen,car runs but is mising on #l plug but has fire.
Nissan Q&AAsk Your Question
1997 Nissan Altima Question: misfire on plug #1
Answer #1mastertech6371 May 11, 2010, 08:40Master
start with a tune up and replace the coil for number 1. the 325 is what is called a ghost code. the 325 in the early years always went along with another code. if you fix the 301, 325 will not return.
Answer #2Visitor, December 29, 2010, 16:56
my car had the same codes but the miss fire was on cylinder 4 turned out to be a pluged intake manifold try unpluging the egr valve by pulling the vacume line off plug the vacume line with a screw and drive the car see if the miss fire goes away