While it might seem like a straightforward warning light to fix, seeing "Check Fuel Cap" on your dashboard could be a sign of ...

It’s part of the evaporative emissions system (commonly referred to as “EVAP”) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap.

The evaporative emission control (EVAP) system is designed to store and burn fuel vapor. Fuel vapor consists of hydrocarbons (HCs) that are harmful to the environment; for this reason, fuel vapors ...