Hi Guys ,just new to forum.Have a 2012 2.0l Rok with 150k on the clock.Found this forum while looking to solve an issue.A small adapter hose at the air cooler had a crack and was sending exhaust fumes via the aircon into the cabin.Disconnected the exhaust assembly at the turbo only to gain access to the air cooler.Turned out it was blocked so was decarbonised,new pipe replaced and put back together.Had no issues until now and the light comes on and goes into limp when going up hills with 80% load in 4th gear.It doesnt do this whlie driving on flat.Had no issues until I disconnected the exhaust system ,removed and decarbonised the cooler.Any suggestions.Thanks Wayne