What is what does it mean when engine power is reduced?

When an engine's power is reduced, it means that the engine is not producing as much power as it normally should. This can be caused by various factors including:

1. Reduced fuel or air supply - The engine may not be getting enough fuel or air to function properly. This can be caused by clogged or dirty filters, damaged fuel lines, or malfunctioning sensors.

2. Malfunctioning sensors - A malfunctioning sensor can send incorrect information to the engine's computer, resulting in reduced power output.

3. Mechanical issues - Worn-out components such as spark plugs, valves or piston rings, can lead to reduced engine power.

4. Electrical problems - Electrical issues such as bad wiring or failing ignition coils can also cause reduced power output.

When an engine's power is reduced, it is essential to diagnose the underlying cause as soon as possible to prevent further damage. Continuing to drive or operate the engine with reduced power can lead to more severe mechanical failures which can be costly to repair.