I have a 2025 Ram 2500 Laramie with the 6.7 Cummins. There’s 600 miles on the Truck I just filled the DEF 200 miles ago. The meter in the truck said it was full this morning , then all of a sudden I have warning DEF light come on and my DEF gauge reads 1/8 of a tank. No way it’s empty, and I’m finding no leaks. Anyone else have this problem???? Thanks for your time.
Ram Heavy Duty Forum
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DEF PROBLEM
- Thread starter Lee H.
- Start date
MacksRam
Member
Lee,
YES!
See this thread below: "2025 Cummins--Anyone notice that DEF gauge not reading correctly?"