himanishrag Posted August 5, 2017 Share Posted August 5, 2017 Hey all, I need your help.. I have a 2007 Fusion AWD (3L V6) with check engine light on. I got it diagnosed and it has P0174 code. I'm an amateur in terms of mechanics and my mechanic changed my O2 sensor which set me back a couple of hundred dollars. Unfortunately, the light has come on again with the same error code. My car runs great but I have noticed a significant increase in fuel consumption. Can you guys help?Thanks 0 Quote Link to comment Share on other sites More sharing options...
swip51 Posted August 5, 2017 Share Posted August 5, 2017 Maybe the PCV valve or the MAF sensor... PCV Valve is cheap and easy to replace, so that may be a good starting point. 1 Quote Link to comment Share on other sites More sharing options...
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