clio problem

[yorkie boy]

hi
my son has a y reg 8v clio and has developed an intermitent problem,occasionaly when starting from cold it will only rev to 2k and two orange warning lights show up on console.after getting it warmed up and removing the key and re-starting it runs ok.has anyone had a similar problem .i was told it could be a faulty sensor on the intake manifold.
any advice would be appreciated
cheers
steve