I have a 2006 S40 1.6D on the dashboard it's coming up anti skid service required I plugged a diagnostic tool in but the only faults I'm getting is for egr valve can anyone help me with this

 

not all code readers can read the chassis codes that report on ABS components. You may need to go to a shop who can do so or rent a tool. Most likely cause is a faulty wheel sensor - did you recently have any brake or suspension work done?