Incredible Check Engine Light And Gas Cap Light On Ram 1500 Ideas. Then disconnect the battery, reconnect it, and the check engine. Web the check engine light is a warning light that indicates there is an issue with the engine, such as low oil pressure or an emission problem.

The most common reason that a check engine light comes on is because of a loose gas cap. Prices may vary depending on your location. Web the check engine light is a warning light that indicates there is an issue with the engine, such as low oil pressure or an emission problem.
