Service Engine Soon

[sshak13]

I Have A 01 Navigator. I Have 64k Miles On It. My Service Engine Soon Light Is On. In The Manual It Says It Might Be The Gas Or Water In The Fuel, Or The Fuel Cap. I Tried The Three Driving Cycles Thing Too. Does Any Body Think They Know What This Is. I Dont Know Anything Bout Cars Remember.

 

[mark0101]

It could be your O2 sensor most likely. Check that out. Go to auto advance,(i might have the name wrong, correct me if I am wrong) they will tell you what it is for free.