Engine light on day after filling DEF tank
I want to say something like this happened on my '15 6.7, and I hope it's the same thing. Filled up DEF tank w/ 5 gallons (gauge read just above 1/4). Drove it home ( several miles) after a couple ...
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We have a 2015 and had problem with computer saying def low with full tank, it was the sending unit in tank and had to be replaced as truck went in to limp mode, it is a common fault.
Frank.
Frank.
