What is the reason why the classic Focus fault light is always on

The fault light is lit to indicate that the engine system is faulty, but the specific component problem needs to be detected using a diagnostic instrument to determine. Common faults of classic Focus include inlet control solenoid valve failure, EGR valve failure, ignition system failure, discharge system failure, etc., please go to the repair shop as soon as possible to check and repair.

You seem to have this situation mainly due to the failure of the electronic control system of the engine, and you need to go to the repair shop decoder to read the fault code, and then repair it according to the fault code.

There are many reasons why the engine failure light is on, there may be bad combustion, there may be power problems, it is recommended to check it.

Hello, this is likely to be a sensor failure, it is recommended to check and replace the sensor.

You belong to the engine is faulty, it is recommended to overhaul it, you need to read the specific fault code!

If the fault light is always on, it is a fault, and the fault data should be read and the problem should be solved according to the data analysis.

Hello, the fault light is on, indicating that there is a problem with the engine, and you need to go to a professional repair shop to test it.

There must be a reason for the failure of the car, the light is either a fault or a sensor failure, and it is best to check it by the computer in the store.

What fault lights are you going to look at for this? Correspondingly, you can go to the 4S store to check it with a barcode reader to determine which hardware is wrong, so as to target it faster.

It means that the car has a fault and has not been eliminated, and it is recommended to eliminate it.

Hello, it is recommended to go to the repair shop to test the fault code with a diagnostic instrument to solve it in a targeted manner.

Hello Look at what fault lamp, the professional shop can detect the fault code according to the fault lamp, and repair the symptoms.

You need to check the specific fault, and you need to repair it!

It is recommended to go to the 4S store to read the fault code and rule out the cause.

1. If the carbon deposit of the engine itself is more serious, or the throttle is too dirty, the light will be turned 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 was launched at the Guangzhou Auto Show on November 20, 2020, and the Changan Ford Focus family has launched a total of eight models: including 7 models in the 2021 Ford Focus sedan and hatchback categories, with a price of 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-level vehicle platform, bringing together Ford's strong R&D capabilities and the collective wisdom of its global engineering design team, with world-leading powertrain technology, racing-grade chassis tuning, stylish and sporty exterior design, and advanced intelligent technology, bringing enjoyable driving pleasure and creating a new benchmark for mid-level driving fun.

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.

Summary. Hello, here is the know, I will do my best to solve the problem for you, I hope to help you. 1. Sensor problem: when the sensor is damaged, the contact is poor or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, and the engine fault light will be turned on.

2. Maintenance problems: poor engine maintenance is a common cause of engine failure;

3. Oil quality problem: if the engine oil is not added as required, it will cause wear and tear of the engine in the long run, resulting in the failure light to be on;

4. Poor combustion of mixture: spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage, etc. of the engine will cause poor combustion of the engine mixture, and the poor combustion of the mixture will bring about the problem of carbon deposition or detonation of the engine, which will cause the fault light to light up.

What are the reasons for the failure of the Fox light?

Hello, here is the know, I will do my best to solve the problem for Yuanqin you, I hope to help you. 1. Sensor problem: when the sensor is damaged, the contact is poor or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, and the engine fault light will be lit at this time; 2. Maintenance problems:

Poor engine maintenance is a common cause of engine failure to light up; 3. Oil quality problem: if the engine oil is not added as required, the long hidden crack period will cause the wear of the engine, resulting in the fault light on; 4. Poor combustion of mixture: spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage, etc. of the engine will cause poor combustion of the engine mixture, and the poor combustion of the mixture will bring about the problem of carbon deposition or detonation of the engine, which will cause the fault light to light up.

The fault light is round, the top half is yellow, and the bottom half is red. What is the faulty lamp.

I take a look at the ** and know to serve you.

Summary. Hello, happy to answer your questions.

Hello, happy to answer your questions.

2.In view of this situation, it is recommended to use a computer to check it first, and use the computer to diagnose the hidden family to see what fault code is reported.