Thanks alot Guys for your thoughts feeling a bit better, just collected the zed without taking the work carried out by nissan as im not paying a ridiculous £324 for a mass air flow sensor!! Will PM ZMANALEX for parts and do as you guys say and take it to a garage to get them fitted!
Have just driven her home, the car drives fine with no problems and the Engine management light is not on display anymore? Have they just cleared the fault although the service person said they couldnt clear the fault until the work had been carried out??