L322 Engine stability controller glow system

Hi all. Start off I have a 06 plate td6 vogue automatic.
Iv had a slight juddering developed over the past few weeks at slow moving. low revs. Iv had it down the garage had the codes reset and driven again and the fault has come up as. engine stability controller glow system. He suggested a injector cleaner as a start to see if that clears it. But he is not entirely shore what it is as there could be Manny variations. The car is fine Under power. Iv had the crankcase breather changed as per advise from this forum if that could effect it. Is there any advise I could get before I sell a kidney and ship her off to a main dealer. Thanks

Quick search brought this * to light. Might help, might not but there might be other snippets already floating around the site.
*https://www.landyzone.co.uk/land-rover/rough-idle-when-warm.321729/page-2

Hi. Yes I read this I have had battery trouble aswell. So for people that read this first gonna run a injector cleaner thru. Then move to new battery. Will update this thread as I go along. Thanks for the input.