Knock Sensor question

[mlstraw]

When I was diagnosing my code 31 Detonation sensor issue, I found that the previous owner had wire tied the sensor to the wiring harness rather than having it installed in the engine block. I have tried searching for reason why someone would do this but I don't even know what I am looking for. The car appears to be very well built and the sensor was nicely secured to the harness with multiple wire ties. It was not simply "left out."

So I ask; why would someone remove the knock sensor from the block and just leave it hanging in the wiring harness?

Mike

 

[TSITurbo95]

Obviously the ECU can't detect knock without that sensor. Perhaps to hide a knocking issue from a buyer, or thinks he does not need a knock sensor for some odd reason? Put it on the block and plug it in.

 

[GRAVEDIGGER]

That would be one way to blow up an engine. Put it back in the block so it can do it's job before it's too late.