2004 Mazda MX6

Engine Mechanical problem
2004 Mazda MX6 4 cyl Front Wheel Drive Automatic 105000 miles

I hooked up a code scanner and it is showing 2 codes. One is 455 which says it is a emission control system leak, the other is p2187 which I think is a fuel temperture sensor circuit. What are some things that I can check or do before I take it to the repair shop. Thanks Chuck
December 27, 2009.

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