The EPC light of polo car is always on. What's the problem if it can't be repaired?

After driving 6200 kilometers, epc light is on as scheduled. It seems that this is a common problem of polo. After the first light, it followed. According to the statistics, the lighting situation in a week almost happens within 1-2 minutes after ignition. It has been tested many times. If the train is not started immediately after ignition, it will not light up. And then there is the sound of ignition, so you can judge whether it will light up or not. If the ignition sound is crisp and powerful, it will not light up; If the ignition sound is dull, you will drive at a low speed immediately, and the epc light will undoubtedly be on. In order to avoid frequent lighting of epc lamp, learn from dx's experience, preheat for two minutes after ignition, wait until the idle speed is lower than 1000 rpm, step on the accelerator with big feet during driving, and shift gears at 3000, which basically controls the lighting of epc lamp. In view of the fact that many DXs reflect that the epc light will light up during driving, we specially tested it on the way to work yesterday, changed the method of shifting gears at 3000, and drove according to the fuel-efficient driving method in the manual, and shifted gears at 2000. Sure enough, the epc light is on during normal driving.

This morning, I decided to go to the maintenance station to deal with this problem. When we set out, we turned on the epc light, leaving behind "criminal evidence". When they arrived at the maintenance station and reported the fault, the receptionist quickly entered the fault code on the computer, and the maintenance item of "epc lamp fault handling" was immediately displayed on the screen. It seems that the receptionist is familiar with this.

When the maintenance order was issued, the maintenance staff asked me to open the hood to dissipate heat. Later, the maintenance personnel skillfully opened the black plastic cover printed with 1.4 16v, and the polo engine was completely displayed in front of our eyes.

The maintenance master removed the throttle with an Allen wrench. At first glance, there is no obvious oil stain, and it feels quite clean.

Then use canned spray cleaning agent (commonly known as detergent) for cleaning.

Take a closer look at the throttle, it is actually made in Germany (see clearly, the throttle is made in Germany, but the hand is authentic from China). Soon, after cleaning, I assembled it into the car, connected the cables and covered the engine cover. The master asked me to light the car and drive out of the parking place. So I got on the car, lit the fire, put in reverse gear, lifted the clutch, and the car slowly backed out. Before walking 2 meters, the epc light came on! What happened? I went to the maintenance master at once, but it was gone. I was really confused. Seeing him coming with a blue box, I opened the door, put the blue box in the driver's seat and lifted the lid. When I saw it, it turned out that the famous maintenance master vag 1552 connected the wire to the pink interface under the steering wheel and operated it skillfully. I looked at it carefully, and English was displayed on the slender LCD screen. I don't know if the maintenance master's English is particularly good, or if his operation is so skilled that he doesn't need to see the screen clearly at all. After a few strokes, he immediately pulled out the line and said, ok.

So I started the car again and walked slowly. I didn't see the light on, and the way back was normal. On the way home from work in the afternoon, I deliberately drove according to the fuel-efficient driving method in the manual, shifted gears at 2000, and drove all the way home 15 km, and the epc light didn't light up.

Summary:

1, epc lamp needs to be processed in the maintenance station, and it can't be solved by itself (because there is no instrument);

2. The reason why 2.epc light is on is that the throttle valve needs to be cleaned;

3. Cleaning is very simple;

4. After cleaning, it needs to be reset with vag 1552 (the specific setting content is unknown);

I didn't receive any money for this cleaning, and I don't know if it will happen again.

6, driving hard on the accelerator can avoid or delay epc lights.