subieoutback019

I got the PO483 check engine light today and I know what the code is. It only happens when there is a temperture drop of more than 15 degrees overnight because i live in new england. My coolant is fine, perfect color and perfect level and the cooling fans come on and my temp guage stays at the mid way point or one or two lines below that depending on how cold or hot it is out. Do you think I am just getting a false CEL because there has been such a drastic temperature difference the past couple nights in connecticut? Any help is appreciated.