2001 Subaru Forester Q&A

2001 Subaru Forester Question: smog detector

85,000 miles check engine light comes on, goes off after several days, comes on again mechanic said it was a smog detector? please locate this for me and offer insight into replacement -
Answer 1
There is no "smog detector". Here is background on the check engine light that will get you started on the right path to getting the problem fixed: http://repairpal.com/check-engine-light -