Micra 2012 K13 75.000 km: Error code P0011

Hello everyone. I have recently bought this used car. Engine light got on on day 5. Computer read it as P0011 code. Changed the oil but my mechanic was unable to find the location of VVT Valve selonoid . Can any body help me by sending the photo of exact location of this valve to be cleaned. ? also if there is any thing else to be cleaned?
any useful information will be highly appreciated.