+18 Check Engine Light On Eco Light Off Ram 1500 References. On my 2009 when my check engine light popped on because i had a loose gas cap the fuel saver icon never appeared but i know it will dropped down to 4 cylinders because i could hear it thanks to my flowmaster exhaust. The most common reason that a check engine light comes on is because of a loose gas cap.
Web #2 · apr 2, 2012. Web i have a 2014 ram 1500 ecodiesel with 85,000 flawless miles. Web so after a total of 22 miles from the time i drove it off the lot, the cel light came on.
