My check engine light start coming on in 2011. I have a toyola Corolla 2009. on 2009 Toyota Corolla

My check engine light start coming on in 2011. I have a toyola Corolla 2009. The light come s on within 30,60,and 90 days. Dealre have checked the problem. The only answer given is check your gas cap.Can some one tell me what is wrong with my car?

by in Warrenton, GA on January 24, 2012
3 answers
ANSWER by on January 24, 2012
you need a new shop. you have an evap issue and it is difficult to diag but can be done by a competent shop. Roy
ANSWER by on January 24, 2012
what code does it come out with and have bought a new gas to see if its the problem.
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ANSWER by on January 24, 2012
It's awful if the dealer can't fix an evap problem, canisters fail a bit but as Roy said any competent shop can do it by using a "smoke machine" to check for leaks.