Def not moving, no pulling power

Wonder how long I can drive it? Amber engine fault light on, no real pulling power and def tank is full and has been for 2 weeks since I acquired the 2012 volvo 670. I need to make money to pay for a shop visit. Got an extended warranty on aftertreatment DPF and Engine, but cushion is gone. Any ideas? Engine fault, but no explanation of what it is. Been driving 2200 miles since it came on. Thanks.

 

SOCAL EXPRESS, it's a D13. There was no explanation of the engine fault, I guess I have to find someone who can read it with their computer. I have had def trucks with Swift and Prime, never had this issue. I've driven new and used trucks, this is our first purchase. I'm on my own here and not happy with it doing this right out the gate on our 3rd run from Oregon.

 

That would suck!!

 

It just says, "Engine Fault 1/1", no explanation