Chrysler
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor 1 Circuit Conditions
Cause:
    Engine running, then the test started and PCM detected that the knock sensor 1 voltage fell below a minimum value at idle or during deceleration or the value was over 5.0v

Ford
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor 1 Circuit Conditions
Cause:
    Engine running, then the PCM detected a KS signal outside of a calibrated value

Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor 1 Circuit

GM
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor Circuit Error Conditions
Cause:
    Engine running, then the PCM detected the Knock Sensor signal was below 1.5v or above 3.6v on VIN 1, L & X, or was below 0.8v or above 2.0v on the VIN K, condition present for 20 seconds