The engine fault light flashed and couldn t hit the car for any reason

When the engine is working, the fault light continues to be lit, it may be that the control system monitors that the engine or transmission system may be faulty, and it is necessary to go to the 4S shop or professional maintenance shop as soon as possible, read the code through a special computer, judge the fault and overhaul it, so as to avoid high fuel consumption after long-term use, or greater losses after the fault worsens.

First try whether the battery is charged, the engine fault light flashes normally, that is the computer is detecting whether the sensor is working normally.

There are many cases where the engine oxygen sensor is abnormal and causes the engine fault light to alarm. The engine oxygen sensor is generally placed near the intake manifold, due to intense driving or some collisions, the oxygen sensor will be displaced or damaged, which will cause the sensor to be abnormal and cause a fault light alarm.

Plugged injectors and carbon build-up in the intake valves can also trigger engine failure light alarms. Because there will be impurities in gasoline, they will accumulate at the fuel injector, which will affect the fuel injection of the fuel injector, especially in the cylinder direct injection engine, which will directly lead to engine shutdown and other conditions. The impurities will produce carbon deposits after combustion, and the accumulation of carbon on the throttle to a certain extent will affect the normal opening and closing of the throttle, affect the normal work of the engine, and cause the alarm light to light up.

Another common scenario is sensor failure. After walking on a muddy road, the engine fault light suddenly turned on, but there was nothing unusual about the car itself. When I drove the car to the 4S shop for inspection, it was found that the left front wheel sensor was faulty.

As a result, the problem was solved by slightly cleaning it with water and then installing it. An abnormal sensor does not necessarily mean that the vehicle is faulty, but there will certainly be an anomaly that needs attention.

1. The sensor is damaged, the contact is poor, or the signal is interrupted; 2. Poor engine maintenance; 3. The quality of fuel and oil is not good; 4. The combustion of the mixture is insufficient; 5. Spark plug failure, ignition coil failure; 6. The fuel pump is faulty and the oil circuit is blocked; 7. The air conditioner filter is blocked.

sensor issues; The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on. 2. Maintenance problems; Poor engine maintenance is the most common cause of engine failure to light up. We know that the vehicle has a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light to care about your car 3, oil quality problems; The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame.

Poor combustion of the mixture; The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the engine mixture. Poor combustion of the mixture is caused by the problem of engine carbon deposition or knocking, and these will eventually be detected by the engine's oxygen sensor and reported to the ECU, which will naturally turn on the fault light to warn of the intake air intake problem; When the engine burns, it needs to take intake, the air filter element is very important in this process, if the air filter element of the car is not clean, it will affect the air intake of the car if it is not cleaned regularly, and it will be blocked for a long time, and if it is serious, it will cause the engine failure light to turn on. pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate.

The most common of these is turbocharger damage, while the vehicle can also experience symptoms such as oil leakage, high oil consumption, loss of power, metal noise, and blue or black smoke from the exhaust pipe. 7. Exhaust problems; Rear oxygen sensor, three-way catalytic converter, exhaust camshaft and bearing. The most common of these is a failure of the three-way catalytic converter that causes the engine failure light to illuminate.

The use of leaded gasoline, the use of leaded or silicone lubricant additives, the bump of the three-way catalytic converter, and the failure of the engine oil supply system are some of the factors that can easily cause the failure of the three-way catalytic converter. anti-theft system; If the car's electronic immobilizer fails, or if the immobilizer does not match the engine electronic controller, the immobilizer system will also cause the engine to not work properly and the engine fault light will be lit at the same time.

Hello, I am helping you sort out the answers to your questions, please wait a while The engine fault light is on, and it does not ignite, generally it may be that there is a problem with a certain sensor of the engine, or there is a problem with the crankshaft position sensor. At this time, you need to use the car's computer to read the fault and ask questions.

The fault light is fully lit for questioning.

The answer is that the fault light is all on, that is, it means that it is not started, and it is not the fault light at all. In this case, you have to see if the motor is not working. You have to see if the motor responds when you start, and if you don't, it may be a problem with the motor.

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, I hope this service can help you. The engine fault light does not light up and does not ignite this situation mainly considers the following reasons, the first aspect is that the power supply line of the engine module has a fault of open circuit, check whether the main power supply fuse of the computer module is normal, whether the power supply voltage is normal, the second aspect is to check whether the grounding line of the engine computer module has a virtual connection poor contact, the third aspect is to check whether the communication line connection of the engine is normal, whether the plug is connected, The fourth aspect is to check whether there is a short circuit or break time problem inside the engine module itself.

Hello, don't click to end, I'm textual to give you the full answer, 2-3 minutes.

Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, I hope this service can help you. The engine fault light does not light up and does not ignite in this situation, the main consideration is the following reasons, the first aspect is that the power supply line of the engine module has a fault, check whether the main power supply fuse of the computer module is normal, whether the power supply voltage is normal, the second aspect is to check whether the grounding line of the engine computer module has a virtual connection poor contact, the third aspect is to check whether the communication line connection of the engine is normal, whether the plug is connected, In the first 4 aspects, it is necessary to check whether there is a short circuit and a broken circuit time problem inside the engine module orange itself.

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In this case, the main check is the engine module line, if the engine module line communication is believed or normal sharp bend, this situation check the engine module itself.

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Spark plug carbon deposition on the market The uneven quality of fuel and congested urban traffic make it easy for automobile spark plugs to produce carbon deposition, which will lead to poor engine work, difficult starting, unstable idling, poor acceleration, urgent refueling and tempering, exhaust gas exceedance, increased fuel consumption and other abnormal phenomena.

Engine failure light flashes and flashes and does not catch fire Reason:

1. Soon after refueling, the engine fault light was lit on the car dashboard; This is generally due to the addition of poor quality gasoline at non-standard gas stations, resulting in insufficient combustion of the oil-gas mixture and the engine fault light when the engine is working. This will not affect driving safety, but it will cause more or less harm to the engine;

2. Oxygen sensor failure: Now there are two oxygen sensors installed on the car, one before and one before and after the three-way catalytic converter. The function of the front oxygen sensor is to detect the air-fuel ratio of the engine under different working conditions, while the ECU computer adjusts the fuel injection amount and calculates the ignition time according to this signal. The rear is mainly to detect the working of the three-way catalytic converter!

Therefore, if the oxygen sensor is damaged or the sensor plug is damaged or loose, the mixture will be too thin or too thick, which will cause the fault light to be on;

3. Air flow sensor failureThe air flow sensor is also known as the air flow meter, which detects the amount of air inhaled and converts it into an electrical signal to the ECU of the electronic control unit, and indirectly lets the ECU decide how much fuel to spray according to the optimal air-fuel ratio. If the air flow sensor or wiring fails, the ECU will not get the correct intake volume signal and will not be able to control the normal fuel volume, resulting in the mixture being too thin or too thick and the engine will not work properly.

In this case, it is often caused by the failure of the ignition system, so it is recommended that it is best to test the fault code first, and analyze and judge the cause in combination with the fault code.

There are at least a dozen reasons why the engine failure light will come on and it won't catch fire. If you can't ask here, hurry up and find a trailer to go to the repair shop.

The vehicle safety system will have this logic: ABS failure affects driving safety, so the ignition system is locked, so that it cannot ignite. The specific ABS fault may be the sensor, line, control computer, etc., but the probability is not high, generally caused by the battery power loss, because ABS has high requirements for power supply.

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1. Sensor problems. For example, water temperature sensors, air flow sensors, inlet air temperature sensors, oxygen sensors, etc., damage or poor contact will cause the engine failure light to turn on.

2. The inside of the engine cylinder is not clean, and there is carbon deposit. The reason for this is generally because the fuel used is not of good quality and there are too many impurities.

3. The air filter element of the car is seriously blocked, which affects the air intake of the car, and if it is serious, it will cause the engine fault light to turn on.

4. Almost all electronic components on the car will turn on the engine fault light if they fail.

Hope it helps.

There are several reasons why the engine fault light is on and cannot ignite, one is that there is a problem with the engine's starter, the second is that the battery is insufficient, and the third is that the ignition coil is faulty, or there are other problems.

The reason why the indicator light of the car dashboard flashes and does not catch fire is caused by the failure of the car's engine system.

The solution is: if the engine system of the car fails, you need to go to the 4S shop or repair shop of the car in time to overhaul the transmission system to solve the problem of the car indicator light and not ignition.

The car dashboard detection function is due to the fact that the vehicle is equipped with a self-protection system. The purpose is to let the driver know the changes in the information inside the vehicle and prepare for it. In this way, some accidents caused by vehicle problems can be avoided. Therefore, it is normal for the engine light to turn on and off.

1. Identify the cause of the failure. For diagnostics of such faults in which the engine does not start, the battery should be tested first. It is necessary to find out if the engine does not start because the battery is insufficient.

2. Detect ignition timing. Timing belt slippage is the root cause of the failure that there is no electric spark and the engine cannot start.

3. Detect the starting system. In the case of faults such as engine failure to start, the first thing to do is to check the circuitry in the engine starting system. From the perspective of the most basic composition, the circuit of the starting system generally includes the following basic parts, that is, the battery, the starting motor and the cable connecting these parts.

Of course, in addition to this, ignition switches, starter relays or solenoid coils, as well as in-vehicle anti-theft systems, are also important components of the starting system.

4. Detect the quality of electric sparks. Once the circuitry of the starting system has been tested and proven to be fine-tuned, attention should be focused on why the engine is not working. Generally speaking, the ignition system of the engine is tested first, which is also the easiest inspection job.

In early ignition systems, you could easily remove the ignition coil and use a spark detector to detect if the spark was normal. When choosing a spark detector, an adjustable detector is preferable to a fixed design because it allows you to adjust the detector to a smaller gap so you can tell if there is no spark at all, or if there is an electric spark but it is weak.

5. Detect the fuel system. The diagnosis of the fuel system can be divided into two parts: the diagnosis of the fuel supply system and the diagnosis of the injector circuit system.

The fuel supply system can be detected by measuring the flow and pressure of the fuel. The best way to measure fuel flow is to inspect the line when there is a load in the fuel supply line.