P0300 Random/Multiple Cylinder Misfire Detected: DTC Detecting Condition

DTC P0300 DETECTING CONDITION TABLE

Item		Detecting Condition	Possible Cause
DTC Strategy		Engine roughness through crankshaft speed fluctuation	Poor connection Ignition system Fuel system Intake/exhaust air system Ignition timing Injector ECM/PCM
Enable Conditions		Engine speed 510 ~ 6480rpm Engine load > Zero torq. Eng. load change < Max. Eng. speed change < Max. Calculated wheel acceleration < 20 ~ 38 Time after engine start > 0 Intake air temperature > -30°C (-22°F)
Case1	Threshold Value	Misfire rate for FTP (Federal Test Procedure) emission thresh > 5%
	Diagnostic Time	1000 revs
	MIL ON Condition	2 driving cycle
Case2	Threshold Value	4% < Misfire rate for catalyst damage <22%
	Diagnostic Time	200 revs
	MIL ON Condition	Immediately (Blink)