Hi, I have a 2019 Freightliner Cascadia. With a Detroit DT12 engine. There is a yellow engine light on in the left side of the dashboard. No dash codes. Could this be DEF related? Or something else all together. See attached picture. Thank you.
Yellow engine light on Freightliner
Discussion in 'Freightliner Forum' started by Cindy, Feb 3, 2023.