Knock sensor code + symptoms

[nismolvr]

Originally Posted by japslapsilvia

If the knock sensor is damaged or has cracks it will usually put ecu in safe mode an it will pull timing ....will make it seem like a fuel cut ....

exactomundo! disconnect ksensor and check for 5 volt reference from ECU , if no voltage .you just isolated the problem , and its a power issue to knock sensor (sensor still good).you have an open circuit in harness.
Knock sensor is a resistor and when its connected in series it drops the reference Voltage to about 2.5 volts wich the ecu monitors. Whenever the k sensor detects pinging/knocking ,voltage fluctuates away from the steady 2.5 , computer then retards timing to protect engine. when engine stops knocking voltage goes back to steady 2.5 and No code is set.When steady 5 volt is seen computer sets Code ,and fail safe. problem is usually a bad K sensor. Hope this helps.