The answer is yes on both counts. If you go to the Mk.3,4 & 5 section and look under the thread 'LIMP MODE' you will see the details of the problem. You will see that I was not the originator of that thread and rode on the back of it because it was highlighting a similar sort of problem. I would have done better to raise a new thread but we can all be wiser with hindsight.
I have been unable to find anyone local (South Yorks) who can fix it and also been let down by four people who claimed they could fix it after diagnosing the codes but who subsequently walked away.
The annoying thing is that I still don't know what the actual fault is. If I did I would have a go myself... if it just meant that a component or sensor needed replacement. I have been led to believe that the fault lies within the EPIC diesel injector pump, hence my purchase of a used item from eBay. I am in the process of stripping it down to see if it is in any fit state to replace the one on the van. It will need refurbishing with new seals, etc. and if tried in the van a new timing belt fitted (this is overdue anyway). However, I am stretching my knowledge and ability here because I am not well versed in electronics and I don't have the necessary equipment to do the testing (i.e. a Lucas Laser 2000) which I have been advised is the only diagnostic kit that will do the job properly.
On the plus side, the van is in very good condition on the domestic front with all appliances working properly. I have user manuals for all of them, oven, hob, fridge, air and water heaters, toilet, etc. I have recently fitted two new batteries and the vehicle runs beautifully (it is hardly run in at 28,500 mile) when not blighted by the limp mode fault. I would say that the first to see will buy if they have access to someone who knows what they are doing.
Finally, you are very welcome to come along and view the van...I will not badger you or anyone else to buy it.
PS : Just read your bottom line "When was the timing belt last changed? Worn belt will cause timing errors and put it into limp"
I was led to believe that the belt was changed at 20,000 miles when I bought the van in 2009. That would mean that it is well overdue time wise. However, I have always doubted that the belt was ever changed at all...in which case it has been on the vehicle for 16 years and 28,500 miles. IS IT POSSIBLE FOR A TIMING BELT TO LAST THAT LONG?