Its just to let you know that this is not normal vibration. It does not ever need to be replaced ( unless it wasn't working but you couldn't tell unless the motor was vibrating like crazy and not throwing any sort of engine codes/ check engine light) normally what will cause the knock sensor code is one or more of the cylinders not firing properly, causing engine in balance an excessive vibration. time to check your spark plugs wires distributor fuel injectors. this is only a code that applies to one cylinderspecifically or 2 cylinders specifically. so you can rule things like the air filter or a catalytic converter or something it would apply to all the cylinders universally.

I was told by Sears that the Quest 1998 has a knock sensor bank 1 and bank 2. However, Nissan mechanic and Pepboys told me there is only one option. I'm really confused and seeking clarification before I have any one repair it b/c it is very costly. Wondering if major tune up would help. Also, needing to know if this type of repair has to be done in auto shop. Please advise.

Similar to those gadgets use on some home security systems that you normally see on every houses. I find them effective though.

with the use of the code reader , we were able to detect what makes the service enggine lights on. Its says Knocking sensor. the reader clear the problem but lights turn back on the next day.Im using 87 octane chveron or 76 gas. And i dont hear knocking /pinging noise so far. What do you think is the issue on this one and is it really need to replace the knocking sensor.. wow i read the comments,, too much labor to take the parts out. thanks

I'm fixing to have my knock sesor replaced on my 2000 Nissan Quest. It's located in the engine block so it has to be done by a professional and the knock sensor itself is no bigger than a thumb and cost $111.99 at Autozone and that was the cheapest. Now the labor takes 10 hours so thats whats hurting.