Ford
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Cylinder Number 4 Misfire Conditions
Cause:
    Engine running in a positive torque condition, then the PCM detected a misfire condition in engine cylinder number 4 (lack of spark or fuel metering, base engine)

Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Cylinder 4 Misfire Detected

Nissan
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Cylinder No. 4 - misfire
Cause:
    Wiring, mechanical fault, fuel system, EGR valve, injector, intake/ignition system, CKP sensor, HO2S front, ECM