I had this on my 1.4 TDCI not long back. the long and the short is, i spoke to the man that designed the EAC Fail program, he said it was the quickest and easiest way of doing what was asked of him. but there is about 25-30 different things that can make it go into limp home mode. his advise was to have a software update. I did and it's much better now.