Electronic powertrain control (EPC) is a controlling element of a Volkswagen’s traction system. This system keeps a VW from skidding and having wheels spin on slick surfaces. It also aids in smoother starting and shifting between gears.
VW Warning Light System
Modern VW models have the ability to warn users about a broad array of problems by sending codes to the dashboard. These codes are general in that they indicate the system of the vehicle experiencing difficulties, but not the specific problem within the system.