Ford
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Ignition Coil I or 9 Primary/Secondary Circuit Conditions
Cause:
    Engine running, then the PCM did not receive a valid IDM signal from the ignition module The PCM was able to identify that Coil I failed

Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Ignition Coil "I" Primary/Secondary Circuit