Hi. Van drops into Limp home mode with this code. I have looked at the actual values on the rail pressure control valve and at tick over it runs at a duty cyle of about 18%. When i take it flat out it rises to about 58%. I have tested leak off and have found injectors to be well worn but i am not sure if thats the cause as the van starts ok, doesnt smoke and goes like a train. It can take 40 miles for the fault to occur. the only other thing it does is it runs on every now and then. It runs on, on all four cylinders and i can see the ecu is keeping them running..
Any help would be great.

Barry