Mazda Millenia misfiring issue causing engine shutoff with codes for cylinders 5 and 6 on Mazda Millenia

Some Mazda Millenia owners report experiencing misfiring issues that lead to engine shutoff, particularly with codes for cylinders 5 and 6. These misfires can result in power loss, reduced efficiency, and overall reliability concerns. Common culprits include faulty spark plugs, ignition coils, or problems with the fuel and air mixture in the engine's cylinders. Owners have noted that addressing these issues, such as inspecting spark plugs for wear and replacing ignition coils, is crucial for maintaining performance. Furthermore, misfires can manifest in various ways, from subtle vibrations to complete engine stalls, and may trigger the Check Engine light, indicating potential damage to the exhaust catalysts. Diagnosing the specific causes of misfires in cylinders 5 and 6 is essential for effective resolution.