The P0350 trouble code is related to an issue with the ignition coil primary/secondary circuit malfunction. This code is commonly seen in vehicles with ignition coil-on-plug or coil pack systems. The P0350 code may cause symptoms such as engine misfires, rough idling, stalling, or a lack of power during acceleration. To resolve this issue, you may need to inspect the ignition coil and its wiring harness for any damage or corrosion. Additionally, checking the spark plugs and the ignition control module may be necessary to ensure proper functionality of the ignition system. It is recommended to address this issue promptly to prevent further damage to the engine or catalytic converter.