Hi. I've got a 55k 2014 Zafira Tourer and has recently flashed up the Service Vehicle Soon message followed by 'Service ESP' I've had it plugged into diag computer and returns fault code P2038, Reductant Injection Air Pressure Sensor A Circuit Range/Performance. Has anyone had this or know what it means? I'm gathering from what I've read that reductant injection is referring to adblue? My car doesn't run with adblue? Any information is much appreciated. Many thanks.