question,freelander1 td4 2006 problem with engine at weekend,found to be bad connection on fuel pressure sw.with warning light coming on,all ok now,question is took car to garage to clear any fault code on obd2,the ecu would not allow entry to engine managment diog.all other areas of car eg abs ok to enter,garage said maybe prob with wiring to ecu.i know for a fact car was at another garage a month ago to clear any fault codes of which 4 old ones showed up and they deleated all is this normal