If a misfire exists that exceeds the threshold value, the ECM sets DTC P0300.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Engine roughness through crankshaft speed fluctuation | 1. Poor connection 2. Ignition system 3. Fuel system 4. Intake/exhaust air system 5. Ignition timing 6. Injector 7. Bad quality fuel | |
Case 1 | Enable Conditions |
•
400 rpm < Engine speed < 4520rpm
•
Engine load > Zero torque line | |
Threshold Value |
•
Misfire rate > 3.25% per 1000 rev. | ||
MIL ON Condition |
•
2 driving cycle | ||
Case 2 | Enable Conditions |
•
Intake air temperature > 17.6°F
•
Coolant temperature > 17.6°F | |
Threshold Value |
•
Misfire rate > 2.5~22.2% per 200 rev. (Depends on driving conditions) | ||
MIL ON Condition |
•
Immediately (Blink) | ||
