Howdy.

This is just a head's up.  I have a 2002, 4cyl, AT, made in Japan.  40k,
full synthetic, and regular maintenance.  Absolutely no problems with
her, but I've had that *@*&$# "check engine" light on quite a few times.  
I had the MAF and O2 sensors replaced (the O2 twice!).  And last trip I
took the damn light came on again.

I know it's just check engine (take it to the dealer asap), but that
damn light is very disconcerting when you are on a trip, out of town, on
lonely roads, etc.  It just sits there are makes you wonder every time
you look at the dash....

Anyway, I had a dealer out of state a few years ago tell me the code was
catalytic converter.  But then the light went out on its own.  It came
on again last trip (and went off again right after I got back).  I took
it into the dealer, exasperated, and the code (I guess it stays in
memory?) was catalytic converter.  Luckily, the service writer found a
TSB on it...so the $500+ job was no charge even though she's now out of
warranty.  Phew!  

So check those TSBs if you are getting check engine lights.  I did a
cursory look on various sites and didn't find the one for catalytic
converter.  

Great car!  Now if the damn sensors that are supposed to tell you if
it's a great car would stop coming on....