Hi have same problem on my 2008 2L HDI tourer 34K miles, engine cuts out and engine oil pressure low fault warning. Took it to dealers today and they confirm fault on fuse box. Booked in for replacement next Thursday at an all in cost of £165.The service manager told me that a few early latest models (post 2008) suffered this problem and a new relay is now used, so the problem won`t re occur .If he`s right you won`t hear from me on this topic again....fingers crossed!!! P.S. winter before last it cut out several times at low revs with a fault code something like anti pollution fault. I looked on another site and found a solution from a auto electrician that the battery might be in poor condition quote "battery powers the car electrics the alternator charges the battery" I do low mileage and the car is not always used much so this looks as if it is true because ever since I keep the battery trickle charged and have had no repeat of this problem Many thanks for the help John