I have a 2015 Ram 1500 eco diesel and got the message that my DEF was low but it was full. It eventually counted down miles until it would not restart and gave me a message to refill will not start. I was able to start it after jumping pins 3 and 5 in the starter relay and it seems like it is driving fine. Does anyone have info on if that could do harm in the long term until I can save enough to fix it? I was told it was a sensor, but need to replace the whole tank because the sensor is not sold separately and would cost $2,500. Any info would help!