What are the symptoms of a failed knock sensor?
Twice during August, I read a P0328 code, which is for the knock sensor. (That's in addition to my false alarm evap codes.)
I've got no obvious driveability problems: the car handles normally, there are no strange noises, my fuel economy remains very high. (31 MPG in this hot weather. I drive with a light foot.)
I'm thinking that this is another false alarm: a sporadic code from a failed self-test that would not have lit the CEL by itself. But it still shows up when I read the evap codes.
If I really did have a bad knock sensor, what symptoms would I see?
I don't want to spend more money chasing a random false alarm. (I spent too much chasing those evap codes.)