My new arrival has had a temper tantrum and thrown up the above code.
It seems it was ok first thing this morning started fine and drove less than a mile to the shop to post some parcels.
When trying to restart it nothing, no crank nothing for 2 or 3 attempts then started up with Service Light on and Anti Pollution warning.
I have done a Diag session and apart from the usual Glow Plugs (P1351) and BSI F3FF ( uncharacterised initiation ) the Code P1164
Cleared everything . Drove it for 25 mins stopped and restarted, did another Diag still got P1351 but nothing else.
Just asking if it is anything to worry about

Not going to complain to the previous owner as he is a very nice chap and looked after it very well

Colin