What should I do if Jetta epc light is on?

EPC is electronic power control, the full name is engine electronic power control system. EPC indicator lights are more common in the public. After the key door is opened, the vehicle starts self-inspection, and the EPC indicator light will light up for a few seconds and then go out.

If the light does not go out after the vehicle is started, it means that the management system has detected the fault of the engine or electronic system. Generally speaking, EPC lights have two possibilities. First, the throttle is dirty and needs cleaning.

In another case, the brake light is not on, so it is necessary to check the brake switch and wiring. In addition, if the engine is turned off due to improper operation, this indicator light will also light up and go out after re-ignition, indicating that everything is normal.

To some extent, the function of EPC lamp is similar to that of fault warning lamp or engine "inspection" lamp which is more common in American cars.