this is from a 2000 Honda Accord LX F23A1 VTEC

my mechanic recently told me my knock sensor was bad, i have no money right but definitely got to save up for it. anyways, my question is could a bad knock sensor cause VTEC to fail?
problem is when i floor my car and hit 5-6K RPM and throw it in N to roll to a stop, the engine shuts off.
so i am wondering if the failed knock sensor could cause this.
happens all the time when i floor it and hit 5-6K then drop it in N and let it roll.