What is the problem of Lapras h7 four-wheel drive fault alarm?

When the light is on, the electronic control system will appropriately control the speed limit of the engine and the vehicle according to the damage degree of the fault. At this time, the vehicle should travel at a low speed to the nearest Dongfeng Liu Qi service station, and be repaired by professional maintenance personnel.

The main reason is that the throttle or engine has too much carbon deposit, and the mixture ratio is unbalanced after the oxygen sensor fails, which is easy to cause the engine fault light to light up. This is related to excessive carbon deposition in the throttle or carbon deposition polluting the sensor.

It may be that the insulation layer of high-voltage line is easy to break down after aging, which leads to the engine fault light. Because the self-diagnosis system of the control unit generally does not prompt the fault code of the high-voltage line, it is difficult to find similar problems when they occur, so it is necessary to use the special diagnosis computer of the special vehicle to cooperate with experienced maintenance personnel to conduct a comprehensive inspection.

There are ABS fault lights, oil and batteries. And the engine fault light.