If there is happened misfires over the threshold value at #3 cylinder, the PCM sets DTC P0303.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Calculation of Engine Roughness | 1. Poor connection 2. Ignition system 3. Fuel system |
Enable Conditions |
•
Engine speed is higher than 240rpm
•
Battery voltage is higher than 10.7V and lower than 16V | |
Threshold Value |
•
Misfire rate / cylinder > 10% of total misfire rate (emission threshold)
•
Misfire rate / cylinder > 25% of total misfire rate (catalyst damage threshold) | |
Diagnostic Time |
•
Continuous | |
Mil On Condition |
•
3 driving cycles or immediately |
