Hyundai Sonata cylinder 2 misfire issue requiring replacement of powertrain control module, spark plugs, and coil on Hyundai Sonata

Some Hyundai Sonata owners report experiencing cylinder 2 misfire issues, often indicated by the OBD II trouble code P0302. This misfire can necessitate the replacement of critical components such as the powertrain control module (PCM), spark plugs, and ignition coil. The PCM is vital for managing engine functions, and its replacement signals a serious engine control system issue. Additionally, faulty spark plugs are frequently the cause of the misfire, making their replacement essential for proper ignition and performance. A malfunctioning ignition coil can also lead to misfires, highlighting the need for timely replacement to maintain engine operation. Owners may notice symptoms like rough idling, poor acceleration, and other diagnostic trouble codes, emphasizing the importance of addressing the misfire promptly to prevent further engine damage and increased emissions. A systematic diagnostic approach is crucial for accurately identifying the root cause of the misfire and ensuring optimal vehicle performance.