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What's wrong with the engine fault warning light

1. If there is a problem with the intake system, there will be poor combustion, and the engine fault light will light up.

2. There are many reasons why the engine fault warning light turns on, which may be due to poor combustion in the cylinder, engine explosion (abnormal combustion of the engine, high frequency in the pressure curve, large fluctuations, and breaking through the cylinder block in serious cases), carbon accumulation inside the engine, etc.

3. The engine lacks a cylinder. Engine spark plug failure, ignition coil failure, fuel pump failure, oil line blockage. 1 Water temperature, crankshaft position, air flow rate, intake temperature, poor contact of oxygen sensor. 1 Poor oil quality causes the wear of the engine, causing the fault light to turn on.

4. The reason why the fault light of the car engine is that the mixed gas of the car engine does not reach the ideal air-fuel ratio. It is not that the fault light of the vehicle engine is on, which means that there is too much carbon that needs to be cleaned. If you feel that the vehicle is shaking, insufficient power, etc., it is also a warning that you need to clean the carbon.

5. What is the reason why the engine fault light is on? It may be caused by the failure of the sensor, electronic system or exhaust system. When these key parts are damaged, the engine cannot accurately judge the current situation of the vehicle, causing the fault light to turn on. The quality of gasoline may also cause the engine fault light to light up.

What is the reason why the engine fault light is on

1. When the sensor is damaged, the contact is poor or the signal is interrupted, the engine fault light will turn on. Poor engine maintenance is the most common reason for engine failure. Therefore, it is suggested that the car should be maintained on time and maintain good driving habits, otherwise it will increase the burden of engine operation.

2. There are many reasons: vehicle engine ignition system failure.The engine start system of the vehicle fails. Fault of the engine fuel injection system. The engine intake and exhaust system is faulty. Engine ECU failure, the above problems will cause the engine failure light to light up.

3. If there is a problem with the air intake system, there will be poor combustion and the engine fault light will turn on.

What is the reason why the engine maintenance warning light is on

1. The reason why the engine fault light is on: poor combustion condition; poor fuel quality; the interior of the engine cylinder is unclean and there is carbon accumulation. Solutions for the engine fault light: clean the engine; add higher-label gasoline; improve fuel quality.

2. If the engine maintenance warning light is on, the car cannot be started, which may be due to the failure of the fuel pump or the ignition system.At this time, you need to call the road rescue, and the trailer will be towed away.

3. If the engine mileage is too long, the working characteristics of the spark plug will weaken, and the fault light may light up. It is recommended to go to the repair shop for inspection and maintenance in time. There are many possible reasons for the engine failure light. Only through professional inspection can the problem be accurately judged and solved.

4. The reason why the engine maintenance light is on: After the engine maintenance light is on, the car cannot start. This may be because the fuel pump can't pump oil or the ignition system fails, so of course it can't be started. Call the road rescue directly, and the trailer will be towed away.

5. The engine fault light may be caused by sensor problems, maintenance problems and oil quality problems. I have encountered many cases where the engine failure light is on. Let's take a look together.

What is the reason why the engine warning light is on

The reasons why the engine alarm light is on are as follows: sensor asks Question: The sensors mentioned here include water temperature, crankshaft position, air flow, intake temperature, oxygen sensor, etc. When these sensors are damaged and the contact is poor or the signal is interrupted, the ECU of the car cannot accurately obtain the data of the engine, which will cause the engine failure light to turn on.

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

The poor combustion state of the engine is the main reason why the engine fault light is on.

How to deal with the emergency treatment when the engine fault warning light is on while driving

1. Turn on the ignition switch (put it in the "on" position) and do not start the engine. Observe the engine fault warning light that should be lit on the dashboard (check the warning light). After starting the engine, the engine fault warning light on the dashboard should be turned off.

2. When novice drivers first encounter the engine fault light on, they will be at a loss, especially when they are halfway through the journey. Should they stop driving immediately and wait for rescue or finish driving? Some veteran drivers don't care, think it's not a fault, and don't take it to heart.

3. Start and turn off the vehicle three times in a row. Turn off the ignition and pull out the negative pole of the engine battery, wait for 30 seconds to connect it, and then try to start. It can be eliminated after using the fault detector to troubleshoot at the 4S store.

4. If the engine fault light is on, there is no abnormal sound in the cabin, there is no other abnormal prompt on the instrument, the vehicle power is not affected, and the gearbox upshift is not affected, you can continue to drive and stop the 4S store for further investigation, because the intake and exhaust, etc. may cause the engine fault light to turn on, and the specific problem is analyzed in detail.

5. The engine light is yellow. If there is no obvious abnormality in the engine, we can reset it by restarting the engine. If the restart fails, we can also reset it by trying to unplug the power supply or fuse.