Hi, I am having trouble with my 2011 Hino 268 Flatbed Rollback. There’s a message on the screen that says DPR Check. The truck is at only half torque and only makes it up to 40 MPH. I have checked the burners behind the front fender. I can’t find anything else online similar to my problem. I can’t make it into the certified dealer it’s too far away. I really need some help with this.