What is the fault that Volkswagen Ling Du OB and electronic throttle light up at the same time?

Dirty throttle body, vacuum leakage of intake system, broken brake switch and failure to upgrade engine in time may all lead to EPC failure. During maintenance, it was found that the pin gap of the throttle positioning motor was too large and the plug connection was poor. Multimeters are often used to test it. After repairing the connector of the motor, I went out for debugging and inspection repeatedly, which proved that this fault no longer appeared.

The electronic throttle control indicator lights up for the following reasons.

The EPC fault light is always on, indicating that the engine management system or electronic control is out of order, which is often accompanied by unstable idle speed of the vehicle or engine jitter during cold start. It's probably caused by oil. You can drive the vehicle to the maintenance service station for maintenance and clean the throttle. When the ignition switch is turned on for function check, the indicator EPC will light up.

Under normal circumstances, dirty throttle body, vacuum leakage of intake system, broken brake switch and failure to upgrade engine in time may all lead to EPC failure. If the indicator light is on while driving, it means that the engine power electronic control system is out of order, and the engine must be checked immediately.