2006 Ford Fusion emission light

2006 FORD FUSION
55,000 MILES • 4 CYL • 2WD • AUTOMATIC
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RIEPER
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I have a 2006 fusion and the emission light comes on. I put the OBD 11 tester on it and it came up with code P0128. What could be the problem?
Mar 26, 2010 at 6:41 PM
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DOCFIXIT
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  • 18,828 POSTS
Thermostat not keeping engine at operating temp. replace thermostat
Mar 31, 2010 at 1:05 PM