It depends on the car, on my moms 92 camry v6 you had to take the intake manifold off and its the first two sensors, same with my 90 supra turbo there the first two sensors under the intake manifold that are on the side of the block, the best answer i can give you since you dont mention what your working on is to go buy a chiltons or a haynes manual at your local auto parts store
There is 2 of them. and they are under the intake manifold. You will have to remove the intake manifold to get to them.
The knock sensor on that vehicle is located under the intake manifold. The intake manifold must be removed to gain access to the knock sensor.
It's under the intake manifold.
under the intake manifold under the intake manifold
There are 2 knock sensor under the intake manifold, You will need to remove the intake to get to them.
under the intake manifold
Under the intake manifold. There are 2 of them.
under the intake manifold on the passenger side.
on My 2002 gti it is under the intake manifold.
Under the intake manifold.
It is under the intake manifold.
under the intake manifold