Including sensors, maintenance problems, fluid problems, air intake problems, poor mixture combustion and so on can lead to the engine malfunction light lit. The engine is the core component of a car, and the fault light corresponding to it is lit, either indicating that there is really a fault; or the engine is experiencing false signals misreporting faults. The engine fault light should not be underestimated, as it may not have a noticeable effect for a short period of time, but if it is ignored for a long period of time, the vehicle may eventually experience a serious malfunction.
Including sensors, maintenance problems, fluid problems, air intake problems, poor mixture combustion, etc. can cause the engine fault light to come on. The engine is the core component of a car, and the malfunction light that corresponds to it is either indicating that there is a real malfunction; or the engine is experiencing false signals misreporting the malfunction. The engine fault light should not be underestimated, it may not have a significant impact for a short period of time, but if it is ignored for a long period of time, the vehicle may eventually have a serious malfunction.
1, the sensor
Sensor damage, poor contact or signal interruption, resulting in the car ECU to receive the wrong engine data, and finally misjudged the engine fault light. There are very many automobile sensors, of which the most central ones are water temperature, crankshaft position, air flow, intake temperature, oxygen sensor and so on. The solution to the sensor caused by the engine fault light debut on the simple, just need to be out of the problem of the sensor replacement or adjustment can be.
Oxygen Sensor:
There are two oxygen sensors, respectively, before and after the three-way catalytic converter, the role of oxygen sensors in different locations is not the same. The front oxygen sensor needs to detect the air-fuel ratio of the engine in different working conditions, the data will help the car computer to adjust the fuel injection and calculate the ignition time. Rear oxygen is used to detect the working condition of the three-way catalytic converter. An overly rich or lean mixture is a direct result of an oxygen sensor problem, and can also light up the engine malfunction light.
Air Flow Sensor:
Also known as an air flow meter, it calculates the amount of air and converts it into an electrical signal, which is used by the engine's computer to determine the amount of fuel based on the optimal air-fuel ratio. Similarly, the effect of an abnormal air flow sensor is a mixture that is too rich or too lean, which causes the engine malfunction light to illuminate.
2, fluid
The car's fluid in fact have strict requirements, we only need to fill the conditions of the fluid to meet the normal operation of the engine. Unqualified fluids can support the engine to run, but the engine is not comfortable to run, so the wear and tear will be accelerated, but also lead to the engine malfunction light lit.
3, mixture combustion
Spark plug failure, ignition coil failure, fuel pump failure, fuel line blockage and other problems can lead to poor mixture combustion. Poor mixture combustion to the engine is the consequences of carbon or shock, which leads to the engine malfunction light. Replacing spark plugs, cleaning the fuel line, cleaning carbon deposits and other measures have a certain chance of eliminating the malfunction light.