Kleptomaniyak

Hello, My engine management light is on, vagcom said crank sensor. I swapped that and the light is still on ? A mechanic friend said that it was something called a variator, it's to do with the VVTI . He said that it is about £300 for a new one. Anybody else had this happen or have any helpful info ? Cheers steve.

Just got a lupo gti as a run around, it's great fun.