Hi all, I wonder if anyone could help with a problem. The engine symbol has illuminated on the dash of my 2008 Antara 2.0l, with 60k on the clock. It is showing error code Po2e1, which is related to an air intake problem. The garage has changed the egr valve and it worked for 250 miles but then came back on again. Has anyone had experience with this fault please? Thank you in advance.