Originally Posted by stevieturbo

When it shuts down cylinders after what is perceived to be a serious series of knock events, as far as I recall it shuts down the relevant cylinders until you cycle power off/on again.

That is the only feature I'm aware of that will actually do that. As to what has changed that may be causing that to happen is another matter. ( and I say perceived, as all knock sensors do is listen to noise, how that noise is interpreted depends on how the ecu is configured, so it doesnt necessarily mean there is or has been detonation )

All other safety features or trips will just enforce a reduced rpm/throttle opening, but normal engine operation aside from that.