What does it mean when the engine reports a fault indicating reduced power?

[VanRowan]

When the engine reports a fault indicating reduced power, it means there is an internal issue with the engine. The possible causes are: 1. Aging or loosening of engine mounts; 2. Engine misfire; 3. Excessive carbon buildup in cylinders, throttle body, spark plugs, or intake system; 4. Fuel system malfunction leading to lean air-fuel mixture and engine vibration; 5. Intake system failure. The solutions for this issue include: 1. Replacing brake pads and discs; 2. Removing engine carbon deposits; 3. Improving fuel quality; 4. Replacing spark plugs; 5. Addressing insufficient cylinder pressure. The function of an engine is to convert the thermal energy of gasoline into mechanical energy by burning it in sealed cylinders, causing gas expansion that pushes pistons to perform work.