Hi guys, new to the forum, I'm Martin. Recently purchased a 2002 Citroen c5 hdi 110 with 65k on the clock, which to me was a bargain considering I got it for £1200 Having issues with it quite recently, first and most important is the turbo, the turbo doesn't seem to work when it's supposed to, the boost is there it's fine and more than less often it works on short distance drives, anywhere over 15-20 miles journey the turbo cuts out and stays out until the engine cools down over time(mystery), no strange noises or smoke. I had it diagnosed which showed up p0246 which supposedly is turbo pressure, not sure if I can provide anyone with more details but does anybody have any clues as to where I should start the investigation as I am a total newbie and have no idea what to look for, a bloke at the local garage has offered to inspect the pipes and "stuff"(his words) for £100 +vat afterwich he also said that it is more than likely that I will need to get a new turbo, but without investigating how the hell did he come up with that. Thanks for any replies and help