What is the cause of trouble code P0300?
1 Answers
The causes of trouble code P0300 are: 1. Poor contact or excessive resistance in the ignition coil corresponding to the cylinder, or a damaged ignition coil; 2. Leakage or open circuit in the cylinder wire, excessive or insufficient spark plug gap, or carbon deposits between the electrodes; 3. Whether the vacuum hose is disconnected or damaged; 4. Improper installation or malfunction of the crankcase ventilation valve; 5. Vacuum leakage at the throttle body, EGR valve, and intake manifold assembly surfaces; 6. Poor operation of the EGR valve and gasoline pressure; 7. Incorrect engine timing and abnormal valve clearance. Trouble code P0300 indicates that random or multiple cylinders have detected misfires, which refers to the phenomenon where the air-fuel mixture in the cylinder fails to burn properly during engine operation due to various reasons.