DTC P0300 Random/Multiple Cylinder Misfire Detected: DTC Detecting Condition
DTC DETECTING CONDITION CHART
| ITEM |
DETECTING CONDITION |
POSSIBLE CAUSE |
| DTC Strategy |
- Misfire is detected on 2 or more cylinder
|
- Faulty spark plugs, high tension lead, 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 |
- 480< Engine speed (RPM) < 6500
- Mass Air Flow above zero load: 216 ~ 564 mg/rev (depending on RPM)
- No injector shut off
- No rough road
|
| Case 1) |
Threshold Value |
- Misfire = 2.8~17 % within 200 rev.
|
| Diagnosis Time |
- 3*200 rev. in FTP Area Else 200 rev.
|
| Case2) |
Threshold Value |
- First 1000 rev.: Misfire > 2%
- After first 1000 rev.: Misfire > 2%
|
| Diagnosis Time |
- 1000 revolution: 4*1000 revolution
|