Espace problems

Hi everyone I am new to this form and looking for some help I have a mk4 Renault espace 1.9dci I have several lights came up on dashboard 1 light is square with a swiggely line though it no one knows what it is and it's making the car drive in limp mode other lights on are esp , abs , service , we had a dianostic test done to reset faults went of for a few seconds and all came straight back on thanks for everyone's time in looking at this message