DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	Calculation of engine roughness	Faulty spark plugs or Ignition coil Incorrect valve timing Uneven compression Air leakage Improper fuel pressure or dirty fuel Blocked, leaking injectors Leakage between cooling system and cylinder
Enable Conditions	Engine load ratio is at between 10 and 85% Engine speed is at between 470 and 6700 RPM Barometric pressure (BARO) model is higher than 75 kPa Engine load ratio gradientle is less than 12 to 60%/s Throttle gradient is less than 58.6 to 1265.6%/s Coolant temperature is higher than 20°C (68°F) if start temperature is lower than -7°C (19°F) No rough road condition (Moving mean value of vehicle speed gradient is less than 13 to 25%) Fuel cut-off not active Battery voltage is at between 11V and 16V
Threshold Value	Misfire detected on 2 or more cylinders
Diagnostic Time	Continuously
MIL ON Condition	Immediately (Misfire enough to damage the catalyst) 2 driving cycles (Misfire breaking the emission regulation)