I have an issue with my 04 accord ex 2.4l, I recently had my starter replaced, then the following day my check engine light came on, so I took it to autozone and had a code reader put on and it read my knock sensor was malfunctioning, so I had that replaced as well as my alternator. And the as I was driving home, no more than 100 feet later, my check engine light was back on again. Does anyone know what could be going on?

 

I moved this out from an 11-year-old thread because it's not really the same issue.

Why replace your alternator along with the knock-sensor? Was the alternator having problems too?

Now the check-engine light came back on, did you have it scanned for an error code?

 

I replaced the alternator because it wasnt charging the battery. And I got the code that said p0325 knock sensor, so with starter, alternator, and knock sensor all replaced. I dont know why my check engine light came back on. And once it did, I had the code reader check again and it still states that it's the knock sensor

 

P0325 = knock sensor circuit problem

Did you check out the wiring for the knock sensor? The PCM can't really tell the difference between a bad sensor vs. a flaky wire connection somewhere.

With other things seemingly having troubles about the same time (was it really the same time?) I'd look for things that might be common among them. Maybe a ground wire somewhere that's corroded or loose? (seems silly, but bad grounds are often to blame when things happen that should be unrelated)

I don't have wiring diagrams for 2004, but hopefully someone around here will chime in with suggestions?