Need help with code.

[ions]

This is for a 2002 Nissan S/C Frontier.

Today I plugged in my scangauge and I got a code "P0328" which is a
"P0328 Knock Sensor 1 Circuit High Input"

What does this mean? I searched for Knock Sensor and didnt find much of anything about it.

Truck is still under Warrenty.

Thanks.

 

[ExplorerDMB]

The knock sensor basically senses knock. Have you filled it up recently? Did you put a higher octane gas in it? Anyway, knock is basicaly a ping. What the computer does is when testing the circuit it allows the engine to ping/knock so that the sensor can hear it and then say "ok I'm working, don't ping/knock anymore." Well yours must be sensing a lot of knock even after it's tested. I would take it to the dealer. Knock sensors are usually in weird places and in hard to find/reach places. Also, ping/knock is just preignition. A higher octane fuel will not allow the computer to make the engine knock because the higher octane is slower to burn. Oh, and the ping/knock that the sensor hears is far times higher frequency than we can hear.

-Drew

 

[ions]

Yea I always use 93 Octane cause that is what the truck manual tells me to use it for best preformance so I always fill up with 93 nothing less. Acouple months ago I ran some Seafoam through the gas but I doubt that had anything to do with it. Also no CEL was on I just plugged it in to see if it worked and blam a code. I will call my dealer tomorrow thanks.