I had a similar list of fault indications with my Laguna II 2.0ltr
and after several abortive visits to dealers and quote for replacement fuel rail, taking the head of etc. etc etc and 2 diagnostics. The CURE liberal doses of injector cleaner and bingo no more lights,limp mode or frustration. One 250ml bottle every other month keeps (fingers crossed) things normal, do get a lumpy tickover now and again but hey that's acceptable
. May be worth a try at least it is a cheap alternative to dealers with cash on their minds.
As I have said before if Ren were in the aircraft construction industry what would happen if a plane went into limp mode