I have Ford Fiesta 1.5 tdci 2013 front damage I repair it engine management light was on I start car was ok but soon is I turn it of didn’t start again I was have to wait 20 second and then start again i take it to the 10 mechanics they put computer all of them they find same code which is ( P06A7 sensor reference voltage “b ” circuit range /performance. Current dtc ) each one of them they said change this sensor for example air filter sensor ! Map sensor ! Ac sensor ! Crank shift sensor and income sensor if I was listen to them probably all sensor cost me more then value of the car but I only change crank shift sensor and still was same but I come go under the car there was 2 plug one for ac other for fog light the one for fog light been close and there was water inside plug I cleaned and dry it and put it on fog light and other one was for ac I close the top until I get ac radiotar now every think working perfect and light go off