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The P0507 code refers to: A P0507 DTC trouble code may be caused by one or more of the following: A vacuum leak Leaking air intake after the throttle body EGR valve leaking vacuum A faulty positive crankcase ventilation (PCV) valve Damaged/failed/dirty throttle body Failed EVAP system Failed IAC (idle air controller) or faulty IAC circuit Things to ...


My first thought was to replace the serpentine belt. My 2004 Escape is now 11 years old and still has the original drivetrain belt and I'm guessing its starting to slip some.


Short answer, yes - a faulty O2 can make the Check Engine Light / MIL to go on. Do you know what the code is?

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