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Generally speaking, there are two possibilities for the EPC light to be on. First, the throttle is dirty and should be cleaned. Another situation is that the brake light is not on, and you need to check the brake switch as well as the wiring.
Also, due to oil problems, the EPC faulty lamp will also be lit.
epc=electronic
PowerControl, which stands for Electronic Engine Stability System, is also known by many as the Electronic Throttle.
The system consists of a number of sensors, controllers, and other elements. When a sensor malfunctions or perceives an abnormality, the control system takes appropriate action according to the programme.
EPC indicators are more common in Volkswagen cars. When the key door is opened, the vehicle starts self-checking, and the EPC indicator lights up for a few seconds before turning off. If the vehicle does not turn off after starting, it means that the vehicle's mechanical and electronic systems are malfunctioning.
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The indicator light is lit to indicate: 1. There may be a fault in the electronic throttle system; 2. The brake switch is damaged; Solution: Clean the carbon deposits in the throttle part; After cleaning, it is necessary to use a special computer to re-learn and match the throttle position; The normal opening cannot be greater than.
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EPC stands for Engine Electronic Stability System, the indicator light is always on means that the engine and electronic system are faulty, if the light is always on or flashing after ignition or driving, it means that the management system has detected the fault of the engine or electronic system, please contact the service station immediately.
Of course, if the engine stalls due to improper operation, this indicator light will also light up to mock you, and the light will be ignited again.
Extinguishing means that everything is normal. 95% of the causes of frequent activation of EPC lights are due to dirty electronic throttle valves. Cleaning is required.
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1. The engine management system is twisted or the electronic control fails
During the operation of the car, the EPC light may be the engine management system or the electronic control is faulty, and the phenomenon of the vehicle at this time is: the vehicle is unstable at idle speed or the engine starts cold. In many cases, the EPC light is on due to the poor oil quality and car environment, and the owner needs to clean the car throttle in time to alleviate this phenomenon, and when the cleaning throttle can not be completed, the car needs to be driven to the 4S shop for processing, so as to avoid other failures caused by their own cleaning.
2. The engine power electronic digging system is faulty
Generally, the EPC light of the car will be lit up when starting the vehicle for self-inspection, if it is lit during driving, it means that the engine power electronic digging system is faulty, and the owner needs to stop and check the car engine in time, if the engine power electronic control system is faulty, the possible reason is that the throttle valve is dirty, the intake system twists to produce true dome leakage, brake switch damage, etc. 3, the brake light is not lit:
When the brake light of the car is not on, the EPC light of the car dashboard will also be on, which requires the owner to check in time when driving, replace the bulb or check the brake switch and circuit, so as to avoid malfunction while driving and affect the normal driving.
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The EPC fault light is always on, which means that the engine management system or electronic control is faulty, often accompanied by unstable vehicle idling or engine cold start. Common fault causes: excessive carbon deposition on the throttle and problems with the opening angle; Due to the lack of cylinder due to engine misfire, the throttle valve does not work properly; There is an air leak behind the throttle, and the intake pressure sensor is not normal.
If the above problems occur, you can stop and turn off the ignition switch, restart the engine, if the fault light is extinguished, it is an occasional failure, you can continue to drive, otherwise as soon as possible to the maintenance organization for maintenance.
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The automotive instrument displays EPC, which means that the mechanical and electronic systems of the vehicle are faulty, and the EPC stands for Engine Electronic Stability System, also known as the electronic throttle. The two most common cases are:
The throttle valve is dirty, in this case the throttle valve should be cleaned;
If the brake light is not on, you need to check the brake switch and the wiring.
The EPC fault light is always on, which means that the engine management system or electronic control is faulty, often accompanied by unstable vehicle idling or engine cold start. Generally, it is caused by the quality of the oil and the dirty environment of the car environment, such as the dirty throttle valve, vacuum leakage in the air intake system, damage to the brake switch, and the failure to upgrade the engine in time.
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The EPC fault light is always on, which means that the following three situations occur: first, the engine management system or electronic control is faulty; the second is the reason for the poor oil quality in China, which leads to the failure of the throttle; The third is that the car conducts self-inspection on the ignition switch. Hope to adopt.
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Here's why:
1. Engine intake system failure: the engine air intake is not smooth, or the air intake is insufficient, and the EPC light will prompt.
2. Throttle failure: Carbon deposition is a common fault of the throttle, in addition, the main body is dirty, which will also affect the air intake, causing the indicator light to light up.
3. Fuel system failure: for example, the fuel is not up to standard, the fuel deteriorates, and the fuel injection atomization is poor.
4. Engine failure: insufficient engine pressure, or problems with the power system such as the intake valve, will also make the EPC light prompt.
5. ECU control unit failure: for example, the signal of the driving computer is interfered with, or the driving computer has a false alarm.
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The sensor has a hidden obstacle or perception error.
EPC Electronic Power Control (full name of Electronic Engine Stability Control), many people also call it Electronic Stability Control.
The EPC indicator is on
EPC indicator light always on behalf of the engine and electronic system failure, often accompanied by vehicle idle unstable chain grip or engine cold start shaking, etc., due to the domestic oil poor, it is likely to be caused by the oil products, you can drive the vehicle to the maintenance service station for maintenance, generally clean the throttle can be solved.
If the light stays on or flashes after ignition or while driving, the management system has detected a fault with the engine or electronic system, and please contact the service station immediately. Of course, if the engine goes out due to improper operation, this indicator light will also light up to tell you, and the light goes out after ignition again, which means that everything is normal.
The indicator light EPC will illuminate when the ignition is turned on for functional checks. If this indicator lights up while driving, it means that the engine power electronic control system is faulty. The engine must be checked immediately.
Under normal circumstances, the dirty body of the throttle valve, vacuum leakage in the air intake system, damage to the brake switch, and failure to upgrade the engine in time may cause EPC failure; 95% of the reasons for the frequent activation of the EPC lamp are due to the dirty electronic throttle valve and the need to clean the throttle.
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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. For faults such as engine failure, the first thing to do is to detect the circuit in the engine starting system. From the perspective of the most basic composition, the mountain distribution circuit of the starting system generally includes the following basic parts, that is, the battery, the starting motor and the cable connecting these components.
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 an EDM detector, it is preferable to have an adjustable detector rather than a fixed design, as it allows you to adjust the detector to a smaller gap so that you can tell if there is no spark at all, or if there is a 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.
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There are usually two possibilities when the EPC light is on in the car. One is that the throttle of the car is too dirty and should be cleaned. The second is that the brake light is not on, and the brake button and its circuit need to be checked.
If there is a problem with the oil, the general contractor roll-off fault indicator will also be lit. If the clutch is broken, EPC will also occur. If there is a leak in the intake duct system, the EPC warning light will illuminate after the engine resource control unit detects the problem.
If the engine starts, pulls out the fuel gauge, and opens the oil filler cap, the engine controller will misjudge that there is a leak in the engine air intake, and there will also be a malfunction, causing the EPC light to come on.
EPC Introduction:
EPC is the full name of the engine's electronic stability system, which is also known as the electronic throttle valve by many people. EPC indicators are common in Volkswagen cars. After opening the key door, the vehicle starts to self-test, and the EPC indicator will be on for a few seconds and then off.
If the vehicle does not turn off after starting, it means that the vehicle's mechanical and electronic systems are malfunctioning.
EPC English full name electronic-power-control, which means engine power electronic adjustment (electronic throttle), in vehicle maintenance, EPC light warning fault is more common, if the light is on, it means that there may be a fault in the electronic throttle system, and the fault may affect the normal use of the vehicle.
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1.Faulty engine management system or electronic control:
While the car is in motion, a failure of the engine management system or electronic control can cause the EPC light to come on. At this time, there will be some phenomena in the car, such as the car idling unsteadily or the engine shaking and vibrating during cold start. In many cases, the sparkle of EPC is caused by high oil leakage, poor quality and poor automotive environment.
It can alleviate this phenomenon by asking the little partner to clean the throttle immediately. If you can't clean the throttle by yourself, please drive the car to a 4S shop and handle it properly to prevent other failures caused by self-cleaning.
2.There is a problem with the electronic adjustment system of the engine power:
Most cars' EPC lights will light up when you start the car self-test. If they light up while driving, there is a problem with the engine's electronic power conditioning system, so you should stop and check your car's engine immediately. If there is a problem with the engine's electronic power adjustment system, the possible cause is that the throttle beam is dirty, the air intake system is vacuum leaking, and the brake switch is damaged.
3.Brake lights do not turn on:
When the brake light of the car is not on, the EPC light of the car dashboard will also be on, and the small partner should immediately detect when driving, replace the bulb or detect the brake switch and circuit, so as to prevent malfunction when driving, which is related to normal driving.
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EPC = Electronic Power Control, also known as Electronic Throttle. The system consists of sensors, controllers, and other components. When a sensor fails or an abnormal condition occurs, the control system takes appropriate action.
When we accelerate, the control unit senses that the throttle is opened, but if there is a fault with the brake light switch, the control unit receives a brake signal from the brake light switch. According to the programme, the control unit will reduce the fuel injection time and the engine's vertical power output. However, when the control unit is unable to determine the cause of the failure, the EPC light illuminates to alert the user to check.
EPC lights are often similar to fault warning lights or engine "check" lights found in American cars. In Volkswagen, EPC indicators are common. When the key is opened, the vehicle performs a self-test and the EPC indicator lights on for a few seconds and then turns off.
If the vehicle still flashes after starting, it means that the vehicle's mechanical and electronic systems are malfunctioning. There are two possibilities for the EPC light to be lit. The first possibility is that the throttle is dirty and needs to be cleaned; Another situation is that the brake light is not on, and the brake switch and wiring need to be checked.
In addition, oil problems can also cause the EPC to malfunction and the lamp to illuminate. If you notice that the EPC light on your Volkswagen is on, we recommend that you go to a 4S store as soon as possible to have it checked. The above is the relevant introduction to the EPC of automotive instrument lights, I hope it will be helpful to you.
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