Hi, I have got a 2006 Doblo 1.9 JTD. Recently the check engine light has illuminated as I was driving along on the motorway at about 70mph. This immediately cut the power to the van and put it in to what I believe was limp mode, but it was still driveable. I have read the fault code with a cheap 'eBay special' code reader and it says P0641, I've looked this code up and know its the 5v circuit from the ECU supplying several sensors including fuel pressure etc. I have now took the van to a garage to find out which sensor has failed and they are telling me there is no 5v output coming from the ECU at all, and it needs a new ECU??? Does this seem right or can anyone else give me any advice on what to do please as I don't want to waste £100's on an ECU if it could be a sensor, thanks