Focus engine failure light on? What is the reason why the Focus engine failure light is on

Vehicle fault light is generally caused by the fuel emission system, when the fault light is on, the vehicle is started, extinguished, started and extinguished three times after starting the vehicle to observe whether the fault light is still lit, or it is still lit to check the fault code in the store in time to see whether it is the problem of the engine or the sensor failure, or it may be an occasional failure can not be checked in time to the store. Reasons why the engine emission failure light is on:1

Poor quality of gasoline will cause the mixture to burn inadequately in the cylinder, resulting in polluting lights, and it is also prone to carbon deposits. 2.The presence of carbon deposits in the inlet duct and piston tip will lead to poor atomization, which will lead to insufficient combustion and the pollution lamp will be on.

3.When the cold car starts, especially when the weather temperature drops sharply, due to the temperature correction problem of the computer, the pollution light will be on when it is started, but as long as the temperature drops to a certain level, it will be relatively stable after the temperature does not fluctuate. 4.

If the engine mileage is too long, the spark plug operating characteristics will be weakened, and the polluting lamp will be lit. 5.Excessive carbon deposition and difficult ignition will lead to the reverse breakdown of the ignition coil, resulting in ignition coil failure, resulting in poor ignition, resulting in incomplete combustion, resulting in the pollution lamp on, this phenomenon has a distinctive feature is that when the ignition coil fails, the engine is always serious shaking.

If it is not always severe jitter, the ignition coil can be basically ruled out. 6.The age of the vehicle is too old, and the aging of machinery leads to poor engine working conditions, resulting in poor ignition, resulting in pollution lights.

7.Some of the sensor computer boards themselves malfunctioned, causing the pollution lights to turn on. 8.

There are many reasons why polluting lights are on, but the first three are the most common. Special Tips: When the pollution light is on, the engine action does not shake or a little shaky, at this time the owner does not need to worry when using it, it can be used normally, and it can be checked or maintained when there is time or convenience.

Although there are many reasons for the lights, due to the age of squeezing engine power, the use of low-grade gasoline for the large compression ratio, I feel that the quality of gasoline is poor or the reason for the use of low grades is too large, it is recommended that large traffic flow gas stations fill up high-grade gasoline, and the car does not shake under the premise of running at high speed for a few minutes, and it should be restored within 2 days. No, check for other reasons. It's my pleasure to have a friend question

It is possible that the Fox engine fault light is on and it is a false fault. A fault is reported**, but it works fine. There may also be a real fault, such as a failure of the inlet pressure sensor, which needs to be found and solved in time.

Generally speaking, the reasons why the engine failure light is on are:

1. The combustion state is not good;

2. Engine knocking;

3. The fuel quality is not good;

4. The inside of the engine cylinder is not clean and there is carbon deposit;

5. The computer cannot obtain the engine data.

If the general engine fault light is on, it is possible that the state of combustion is not particularly good, and the state of the general engine is not good, which is the main reason for the amount of engine failure light. There is also an engine guarantee that will also cause the fault light to be on, such as the car is weak, and the engine noise is too loud, or there is a significant knocking sound. So it's still necessary to do some regular maintenance and repairs.

Poor engine combustion condition is the main reason why the engine failure light is on. In the design of the car, in order to ensure that the engine is in good working condition and ensure the normal working life of the engine, an oxygen sensor is designed and installed on the engine to monitor the combustion state of the engine.

Engine knock The engine also has a special knock sensor to monitor engine knock. Engine knocking already means that there is a risk of serious damage to engine parts or a significant loss of power. In the case of non-inductive detonation, the engine computer will adjust the engine control parameters according to the monitored situation to avoid greater adverse effects, but when the non-inductive detonation has exceeded the range that the engine computer can adjust, the engine fault light will also light up the alarm.

The fuel quality is not good, and many riders who find that the engine fault light is on have a feeling: that is, the engine fault light suddenly turns on after adding a tank of fuel. Because the engine has requirements for the quality index of oil, especially as the requirements for the engine are getting higher and higher in various specifications, the quality index of the oil is also getting higher and higher.

Once the engine fault light is on, it means that the engine parameters have changed, and excessive carbon deposition is a major cause of engine parameter changes. If this problem is not solved, the combustion state of the engine will never be adjusted to the normal state, and the engine fault light will of course stay on and will not disappear automatically.

Once the engine failure light is on, the owner should clean the engine in time, and there are two correct cleaning methods: First, go to the repair shop to clean the carbon deposits with a special cleaning agent (note, do not use the method of hanging bottles, this method is somewhat false, which will damage the spark plug and even cause cylinder corrosion); Second, use good fuel additives to clean the entire fuel system, including removing carbon deposits in the cylinder.

After the engine cleaning, because the compression ratio of the current automobile engine that meets the national IV emission standard is generally above, this kind of car is not suitable for long-term gasoline below 95. In order to keep the engine in good working condition, the owner can choose to add 95 or 97 gasoline, which can usually solve the problem of the engine failure light on.

Vehicle fault light is generally caused by the fuel emission system, you start and extinguish the vehicle when the fault light is on, start and extinguish the car three times after starting the vehicle and observe whether the fault light is still lit, or it is still lit You need to go to the store in time to check the fault code, to see whether it is an engine problem or sensor failure, or it may be an occasional failure can not be checked in time to the store.

The oil is not good, the moisture content is too large, which causes the sensor to alarm and cause the engine failure light to be on, it is recommended to add No. 97 oil, and gasoline additives can also be added.

Hello! This is an engine failure! You need to use a computer to read the fault code to judge! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello! If the engine fault light is on, it means that there is a problem with the engine system, and you need to go to the repair shop to get a decoder to read the fault code to know what the specific cause is! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

There are many reasons, oil circuit, air intake, exhaust, electronic control are possible, you had better use a computer to test it! See what the fault is! Your car is tens of thousands of kilometers away! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello car owner, [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

1. The carbon deposit of the engine itself is relatively serious, or it isThrottleIf it is too dirty, the light will be on, and this situation needs to be cleaned.

2. It is the recent addition of not very good gasoline, or the recent addition of gasoline and the previous addition has obvious differences in composition, this is generally a sudden change of gas station refueling caused by the oil problem, generally do not need special treatment, step on a few more feet of the big throttle idling a few times.

3. If there is a fault in the engine or fuel system itself, this is the most serious problem, and it is necessary to contact 4S for inspection and maintenance in time.

Fox Profile:

Changan Ford Focus.

On November 20, 2020, it was launched at the Guangzhou Auto Show, and the Changan Ford Focus family launched a total of eight models: including the 2021 Ford Focus sedan and hatchback, with a total of 7 models, priced at 10,000 yuan; High-value high-performance model - Ford Focus Hunting Edition, priced at 10,000 yuan.

The Ford Focus family is based on Ford's new mid-range vehicle platform and is home to Ford vehicles.

Strong R&D capabilities and the collective wisdom of the global engineering design team to the world's leading powertrain.

Technology, racing-grade chassis tuning, stylish and sporty exterior design, and intelligent technology that leapfrog the next level bring enjoyable driving pleasure and create a new benchmark for intermediate car driving fun.

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.

Summary. The first thing to do to fix the Focus engine fault light is to check the engine system. Check whether the engine has failed, and if there is a fault, repair it immediately; Check that the engine oil is sufficient, and if it is insufficient, refuel; Check the engine for oil leaks; Check for fuel system failures and deal with them as soon as possible; Check the oil filter and replace it if it is clogged; Check whether the engine cooling system has failed, and if so, deal with it in time; Inspect the engine spark plug and replace it if damaged; Check the air filter and clean or replace it if there is any dirt; Check the engine exhaust system for malfunctions and fix them as soon as possible.

If the engine fault light is still on after the above checks, you should go to the 4S shop for diagnosis and a more in-depth examination.

The first thing to do to fix the Focus engine fault light is to check the engine system. Check whether the engine has a fault, and if there is a fault, it will be repaired immediately; Check whether the engine oil is sufficient, and refuel if it is not sufficient; Check the engine for oil leaks; Check for fuel system failures and deal with them as soon as possible; Check the oil filter and replace it if it is clogged; Check whether the engine cooling system has failed, and if so, deal with it in time; Inspect the engine spark plug and replace it if damaged; Check the air filter and clean or replace it if there is any dirt; Check the engine exhaust system for malfunctions and fix them as soon as possible. If the engine is still lit after the above inspection, you should go to the 4S store for diagnosis and more in-depth examination.

The fault light of the engine is lit, indicating that the vehicle's computer system has detected some problems with the socks. This can be caused by the failure of the engine or other related components. There can be a number of reasons why a Focus's engine failure light is on, including an air flow sensor or an oil circuit problem.

If the Focus's engine failure light is on, it is recommended that you stop and check your vehicle's engine and related parts in a timely manner. If you don't have the expertise, it's best to have the vehicle inspected by a professional or towed back to the workshop. Often, problems with the Focus's engine failure lights on need to be tested and inspected to find a solution.

In some cases, the Focus's engine failure light may be caused by an incorrect ratio of fuel to air. This could mean that the air flow sensor needs to be replaced or needs more cleaning. Other causes include problems with the engine control unit, oxygen sensor, or ignition plug.

These problems may require the replacement of some parts to resolve.

In addition, car owners also need to carry out maintenance and maintenance of Fox vehicles to reduce the probability of engine failure lights on. Timely replacement of various components of the vehicle, such as braking system, cooling system, can effectively reduce the risk of failure.

In summary, the failure light of the Focus engine can be caused by a variety of reasons, which need to be professionally inspected and tested. Car owners also need to follow the vehicle's instruction manual for vehicle care and maintenance to reduce the probability of engine failure lights on. <>