We have a new campervan, well new to us (2009 reg) and the engine is a thing of joy compared to the old bus. It romps up hills and despite pulling a much heavier load it seems to be returning >30 mpg (according to the computer). Of course, this is probably lying. ;-)
Anyhow, on our first trip away, we got stuck behind a bl**dy campervan and when an opportunity to overtake arrived, it was a long straight hill. I gave it the beans and it sailed gloriously past, at which point a red warning light lit on the dash and "Engine malfunction" appeared on the display.
We pulled over, turned the engine off and checked the oil level (which is about the limit of what I feel competent to do on a modern diesel these days). Oil was perhaps a wee bit high (just had a service) but engine temperature was fine. On restarting the warning had gone and never repeated over the next 250 miles.
So, do I rush off to a garage to get the codes read (if possible) or is this just "one of those things" that happens occasionally with modern diesels when you demand full power for any length of time?
Tim