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This fixed it on my Ford. Part cost about $50 at the ford dealer. The oxygen sensor is located below the engine in the exhaust pipe before the catalytic converter and muffler. It is mounted in the pipe with wires going to it. You need a special socket to remove it in most cases but sometimes you can do it with a wrench. When replacing it be sure to put anti seize lubricant on the threads so it can be serviced again in the future. It came with the anti seize lube. Just make sure the anti-seize your using will not damage the O2 sensor your installing if your not using what was provided . Your best to find out if this is the reason the light is on, as it may be just a loose gas cap. Before you do anything, go to Autozone and use their loan a tool program to chech out an OBD-II code reader. Follow the instructions on the box, or if you don't feel comfortable doing it yourself (it's really easy), have one of the store employees do it for you. My check engine light came on this past winter, and it turned out that one side of the engine was too lean. I remember the light came on when I started the explorer on a particularly cold day. Anyway, once you reset it, it probably won't come back on unless there is something wrong with some component. Go to Auozone and have the code downloaded, then come back to this site and ask how to fix that code. Oxygen sensors usually go first, but you can get a light even from having a loose gas cap.

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โˆ™ 2009-12-14 04:38:21
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Q: What is the probable cause of the check engine light on a 1998 Ford Explorer Sport?
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