The speed of the tiger in Jiangling can't go up, but there is no fault. The light is on.

The reason is that 1, the sensor fault causes the ecu of the automobile to be unable to obtain the engine data accurately; 2. The engine has carbon deposit; 3. Engine oil blockage caused by spark plug failure, ignition coil failure, fuel pump failure and insufficient combustion of mixed gas; 4. The intake valve is blocked; 5, gasoline quality is not up to standard. The treatment methods for weak acceleration when the engine fault light is on are: 1, reconnect or replace the sensor; 2. Replace the spark plug or ignition coil; 3. Replace the air filter element and clean the throttle and oil circuit; 4. Change engine oil or gasoline; 5, clean up the engine carbon deposit.