I’ve got a 2015 Ram 3500 Diesel. 60k miles. Lately, I get this message: “Incorrect DEF detected. See dealership.” And the check engine light stays on.
Say what??? There is nothing wrong with the DEF. The only thing I can think of is that the truck isn’t being driven a whole lot right now. When I do drive it, I make sure it goes long enough to be fully warmed up - no shorty trips - and gets up to highway speed for at least a bit.
I’ve googled what I can find, which really isn’t much. It has not threatened to go into limp mode. I cleared the code on it once, 2-3 mos ago, now it’s back. Hubby goes hunting end of this month and that’s a really long trip with a lot of gear, and I sure don’t want the truck breaking down on him in the middle of nowhere.
The DEF is fresh, I only buy what we need, when we need it.