High idling 2011 V50

[Feetloose]

Hi all, I bought a second (?) hand 2011 V50 2 liter Powershift RHD with 198000 km a month ago. As there were no service records I did an oil and oil filter, air filter and spark plugs change asap. I had to replace one spark plug coil that showed an error on the OBD computer and also replaced the intake manifold gaskets as one gasket was "leaking". Vehicle driving really well now, except that I am having a high idling problem. Engine idles at 1200 rpm, but shows no error codes. Any suggestions on what to look for would be appreciated. Because I am based in South Africa, we pay an arm and a leg for any parts or services (our exchange rates are VERY bad). If possible, I would like to solve the problem myself. I bought the Haynes Owners Workshop Manual, but compared to my previous vehicles that I owned, this manual is really not a big help. No detailed graphics as compared to other vehicle models that I worked with. I really like the vehicle as I am a disabled person using a wheelchair and love the space of this car. I would appreciate any help if anybody has any suggestions.