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List of contents of this article:

• 1,< A href='# What's wrong with the engine fault light always on?' title='What's wrong with the engine fault light always on?' > What's wrong with the engine fault light?
• 2、 How to eliminate the yellow light of the engine fault light?
• 5, The engine fault light is always on. What's the matter?

What's wrong with the engine fault light?

1. There are many reasons why the engine fault light turns on, such as: carbon accumulation and dirt on the throttle valve, spark plug or ignition coil failure, intake system failure, fuel failure that does not meet the standard, abnormal cylinder pressure, ECU failure and exhaust system failure, etc.

2. Mainly because the oxygen sensor, water temperature sensor, crankshaft position sensor and air flow sensor are damaged, or when the contact is poor, the driving computer of the car cannot obtain the relevant data of the engine, resulting in the engine fault light to light up.

3. Poor combustion of the engine is the main reason why the engine fault light is on.

How to solve the problem of the yellow light of the engine fault light

If you encounter the yellow light of the engine fault light, it is recommended to go to the 4S store for repair and read the engine fault code through a special computer to judge the fault point.

If the gas cover is loose or leaking is the reason why the engine fault light turns yellow, the problem can be solved by tightening the gas cover or replacing a new gas cover. Generally speaking, tighten or moreAfter changing the gas cover, it takes dozens of kilometers or a few days for the engine fault light to turn off automatically. Slow down and stop for inspection.

The solution to the yellow light of the car engine is to clean the entire oil supply system with gasoline additives; to connect higher-label gasoline after completing the engine cleaning agent; to improve the cleaning level of gasoline diesel with good gasoline additives; and replacing the ternary catalyst.

What are the reasons why the engine light is on

The problem of oil products needs to choose the appropriate oil and gasoline according to the characteristics of the engine. There is a problem with the sensor of the vehicle, causing the fault light to turn on. Problems with spark plugs or lines will lead to insufficient combustion of the engine mixture. Maintenance problems, or too much carbon accumulation will also cause insufficient combustion.

I: The common reasons are that the engine sensor signal is not accurate, mainly: lack of maintenance, long-term non-cleaning of the throttle valve, long-term failure to clean the engine carbon accumulation, and the accumulation of carbon accumulation will adsorb part of the fuel vapor. For example, the throttle position sensor is dirty and blocked, causing the engine to work poorly, accompanied by insufficient power, idling jitter, engine fault light on and other situations.

[Pacific Automobile Network] The reasons why the engine light is on: poor combustion of the mixed gas of the engine; abnormal fuel supply pressure; wear of the spark plug pole gap; failure of the ignition coil; aging of the rubber parts of the starting bracket or gearbox bracket; blockage of the throttle valve. Oxygen sensor failure.

Mainly oxygen sensors, water temperature sensors, crankshaft position sensors and air flow sensors appear.When it is damaged or has poor contact, the driving computer of the car cannot obtain the relevant data of the engine, resulting in the engine fault light.

The reasons why the engine alarm light is on are as follows: Sensor problem: The sensors mentioned here include water temperature, crankshaft position, air flow, intake temperature, oxygen sensor, etc. When these sensors are damaged and have poor contact or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data at this time. Cause the engine fault light to turn on.

How to eliminate the yellow light of the engine fault light?

1. It should be noted that when the engine fault light on the dashboard is on, it cannot be eliminated manually. Usually, it can only be eliminated after troubleshooting with a fault detector in the 4S store.The method here is only for the false failure of the engine. If it is ineffective after trying, please go to a special repair shop for inspection and elimination.

2. If the yellow light of the engine is still on after troubleshooting, it means that the fault code of the engine is stored in the car ECU. You need to go to the car 4s store to use the fault diagnosis to clear the system to eliminate the fault code.

3. The solution to the yellow light of the car engine is to clean up the entire oil supply system with gasoline additives; to connect higher-label gasoline after completing the engine cleaner; to improve the cleaning level of gasoline diesel with good gasoline additives; and to replace the ternary catalyst.

The engine fault light is always on. What's the matter?

1. The problem with the sensor is mainly due to the damage to the oxygen sensor, water temperature sensor, crankshaft position sensor and air flow sensor, or when the contact is bad, the driving computer of the car cannot obtain the relevant data of the engine, resulting in the engine failure light to light up.

2. Engine lack of cylinder. It is obvious that the lack of cylinder in the engine will lead to high fuel consumption and black smoke, weak acceleration, serious shaking, engine noise will also increase, and it is easy for the vehicle to turn off. The engine cylinder shortage mainly comes from the ignition system and fuel supply system, including spark plug carbonization, damage to the high-pressure oil pump, etc.

3. The vehicle is too old and the mechanical aging causes the engine to be in poor working conditions, resulting in poor combustion and ignition, resulting in pollution lights on.The failure of some sensor computer boards itself causes the pollution light to turn on. There are many reasons for the pollution lights, but the first three are the most common.

4. Maybe you don't know the reason why the car engine fault light turns on. As an old repairman, I can briefly explain it to you. As for the oil, it is necessary to choose the appropriate oil and gasoline according to the characteristics of the engine. There is a problem with the sensor of the vehicle, causing the fault light to turn on.