Accord Engin Check-Please help
 

Hi,
A while ago Honda dealer told me that I have to replce Rear Sway bar links
and Cat heat shields when I was there for oil change. I didnt pay attention,
since I had no problem with my car, (I have no clue what these parts are).
now since a couple days ago my engine check lite is on (Honda Accord 2000,
137000km, 4Cyl,SE, Canada). I am not sure if this can be related to either
Cat Heat Shield or sway bar? if not, where should I start from, should I
take my car to Honda Dealer or any dealer can fix it (Honda Dealers are more
expensive in my area).
Please advise.
Thanks-Rob