Audi A5 engine fault light is on what s going on Can it still be turned on

I have also encountered it, the shaking at idle speed is terrible, the engine operation sound feels like it is going to turn off, the emission light is flashing, the throttle is turned off for the big fault light, the red light is parked and the idle fault light is on again, is your fuel gauge pointer almost in the red zone or has it been in the red zone? I think the oil is not added well, it is recommended to observe a tank of oil, if the problem is still recommended to send 4s, you can consider adding g17.

There may also be a missing bar, the fuel injector is blocked, and the throttle injector needs to be cleaned. There are friends who encounter such problems.

According to the technical indicators, there is a certain hidden danger of failure when the fault light is on, please be sure to stop the engine and wait for technicians to eliminate the fault.

The engine fault light is on and it is no problem to turn it on to the repair shop, if the light is red, you must turn off the engine and stop.

Audi A5 engine fault light is what's going on, can you still drive Our unit of the same car, also encountered such a problem, does not affect driving, the store can not find out the problem, and then there is an old driver experience, he told us that it is caused by bad fuel, if the magazine exceeds the standard of fuel, it will be like this, simply put, it is caused by bad combustion. Our unit has a PetroChina fuel card, he drives a lot of people know that the batch of oil is different every time the quality of the fuel is not the same, and he will also encounter the magazine gelatinous fuel that exceeds the standard, especially the gas station of the high-speed rest station, the underground oil tank is never clean, and it is easier to add such fuel. As long as you use this kind of detergent such as Si Youpu cleaning agent, after running 1 tank of oil, this EPC will disappear, if it does not disappear, there will be no more after the computer is cleared, and it will be cleaned regularly in the future.

Our department leader took care of the new car and did this to fix the fault light.

Summary. Hello, glad to answer for you. There are four reasons why the Audi A5 engine light is on1

Engine failure light. Engine fault indicator, this light is on when the ignition switch is turned on for car self-inspection, and this light is off when the engine of the car is started, if this light is on or flashing while driving, it means that there is a problem with the engine,..2.

The engine connection line is off. 3.If the engine vibrates when the vehicle is parked and idling, it may be that the engine has carbon deposits or foreign objects in the exhaust pipe.

Hello, glad to answer for you. There are four reasons why the Audi A5 engine light is on1Engine failure light.

Hair grinding slag combustion motor fault indicator, turn on the ignition switch car self-test this light is blind and dim, start the car engine when the light is off, if the light is on or flashing in driving, it means that the engine has a problem ,..2.The engine connection line is off.

3.If the engine vibrates when the vehicle is stopped and the beam is at a low speed, it may be that the engine has carbon deposits or there are foreign objects in the exhaust pipe. 4.

The Audi A5 Sportback is the first imported model to offer a "double-faced" version of the Turbo Dust Zen, which is elegant and capable at the same time, more calm and atmospheric; The dynamic type is more like the Audi RS family.

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.

When the pollution light is on, the engine action does not shake or shakes slightly, 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.

The yellow light of an Audi A5 engine failure is a sensor failure.

Oxygen Sensor Factors:

Oxygen sensors can be used for 3 years or more. Yellow light for engine failure in new cars, check whether the oxygen sensor plug is loose. If the oxygen sensor is not working properly due to oxide blockage, it can be cleaned with carburetor cleaner or sulfuric acid diluted chlorine mu scattered iron solution, and the damaged oxygen sensor can be replaced.

Abnormal Oil Factor:

Inferior gasoline is added, resulting in incomplete combustion of the oil-gas mixture. Finally, the fault light came on. Long-term use can cause more or less damage to the engine. Go to the 4S shop and use a special tool to pump out the gasoline in the tank and replace it with high-quality gasoline.

Valve spark plug factor:

Frequent use of vehicles can easily lead to carbon build-up in spark plugs, which often leads to poor engine operation. Therefore, if the fault lamp is turned on, check the spark plug for carbon deposits, and clean it up.

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Summary. Engine start failure. That is to say, if the engine can not start, if the process of starting is rotated, it is not able to start, this phenomenon to check the gasoline pump to see if there is a problem, but also need to check the crankshaft position sensor, check the engine's anti-theft system, to see if there is a failure, and need to check the engine control computer, to see if there is a problem, these aspects are all need to be specific.

Specific inspection will cause the engine to not start.

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

Engine start failure. That is to say, the engine can not start, if the process of starting is rotated, it is not started, this phenomenon to check the gasoline pump to see if there is a problem, but also need to check the crankshaft position sensing round carrier, check the engine anti-theft system, see if there is a failure, and need to check the engine control computer, to see if there is a problem under the cavity mold, these aspects are all need to be specific. The specific examination will cause the orange slow motion to not start.

I can start, but this trouble light pops up.

Take a picture of this fault light and send it over.

If there is a malfunction in this starting system, it may be that there is a problem with the remote control, there is a problem with the chip inside, or there is a problem with the induction coil of the remote control on this vehicle, and it cannot receive the signal of the remote control normally. Mainly these two aspects, this specific word needs to be tested by the computer, and the fault detected by the computer is handled and repaired.

Hello, I'm glad to answer for you, first check the front and rear oxygen sensors, this thing is broken, the initial appearance is shown in the instrument, the engine fault light is always on (or occasionally flashing), but the car can barely drive for a short time; If it is not repaired for a long time, the computer (ECU) of the electronic fuel injection system will not be able to obtain the alarm information of the oxygen concentration in the exhaust pipe, so that the air-fuel ratio can not be fed back and controlled, which will increase the fuel consumption and exhaust pollution of the engine and cause the engine to have unstable idling, lack of fire, surge and other fault phenomena.