Ford
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor 2 Circuit Performance Conditions
Cause:
    Engine running, then the PCM detected a KS signal outside the calibrated value This code may set if the initial value at key on is more than 0.5v

Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Knock Sensor 2 Circuit Range/Performance