What Causes the Leiling to Display a Fault Prompt for Reduced Engine Power?
2 Answers
There are several reasons why the Leiling may display a fault prompt for reduced engine power: 1. Electrical Faults in the Engine: These faults include damage to certain sensors, such as the air flow meter, throttle idle motor, oxygen sensor, ignition coil, spark plug, coolant temperature sensor, crankshaft position sensor, or camshaft position sensor. Additionally, they may involve some control units or actuators, such as the engine control unit (ECU), ignition control unit, fuel pump, or camshaft adjustment solenoid valve. Apart from these electrical components, the fault could also be caused by the wiring between these parts. 2. Mechanical Faults in the Engine: For example, changes in fuel quality, using fuel with excessive additives, or carbon buildup covering the intake tract, throttle, or spark plugs. Additionally, air leakage in the intake tract below the standard value can generate corresponding fault codes. In severe cases, the engine fault light may also appear on the dashboard.
I've encountered the issue of the Levin displaying reduced engine power several times, usually due to a dirty or clogged throttle body. When the ECU detects insufficient air intake, it forces a speed limit to protect the engine. Sometimes, it's also caused by an aging fuel filter clogging the fuel supply, leading to low pressure and a sudden drop in power. Don’t underestimate this issue—driving with it for a long time may damage the engine or even cause more serious failures. It’s recommended to regularly clean the throttle body and replace the fuel filter, preferably checking every 20,000 kilometers. If the warning appears, pull over first and check the dashboard for any other alert lights. If it persists, go to a 4S shop immediately to read the fault codes—don’t delay until it becomes a major repair.
