My 2015 Galaxy went into limp mode last week with engine service light. I took it to a ford garage. They said it was a DPF problem and have replaced the vaporiser. Still will not regen and they are scratching heads after testing sensors. I live in France and just need to get home this weekend, is there a quick fix to disable limp mode and allow me to drive 1000km without it breaking down? I am expecting them to tell me if need to replace the whole system at 2500 pounds, but I'm losing confidence in their ability to diagnose.