Santana epc light is on. What happened?

EPC light is mainly caused by dirty throttle body, which can be solved by re-matching after cleaning the throttle; There is also a leak in the air intake system, which causes the engine control unit to light the EPC warning light after detecting the problem.

The original reasons for the lighting of EPC lamp are as follows: the lighting of EPC lamp is mainly caused by the dirty throttle body, which can be solved only by cleaning the throttle and re-matching; There is also a leak in the air intake system, which causes the engine control unit to light the EPC warning light after detecting the problem. Restart the engine as we said, and then it will be all right, so we'd better check it when the road is not busy.

There are only two problems with EPC lights.

1, the brake light switch is broken.

2. The throttle is dirty or broken. See if the brake light is off or on all the time, and you will know if the brake light is broken. See if the car is idling, and you will know if it is a throttle problem.

The throttle position sensor may be faulty:

1, idle switch short circuit or open circuit;

2. Improper installation and adjustment of the throttle position sensor makes the idle switch not turned off when the throttle is fully closed, or the idle switch is still turned off when the throttle has a certain opening;

3. The sliding contact of the linear variable resistor is not in good contact, and the output signal of the throttle position sensor is interrupted intermittently in the process of the throttle valve returning from fully closed to fully open;

4. When the throttle position sensor fails, it will affect the abnormal idle speed of the engine (such as too high or too low idle speed, unstable idle speed and easy flameout) or abnormal acceleration of the engine (such as engine jitter during acceleration and slow acceleration response). ), sometimes it may also affect the intermittent trembling and vibration of the engine when it is rotating.

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