July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
DTC Set Conditions
Check conditions are:
2 seconds or more have passed since the starting sequence was completed.
Engine speed is higher than 2500 rpm.
Judgement criteria is when the knock sensor output voltage (knock sensor peak voltage in each 1/2 turn of the crankshaft) has not changed more than 0.06 volt in the last consecutive 200 periods.