Get a cheap code reader and see what the code actually says. That will at least give you some idea what is wrong.

If it is an evaporative leak, try replacing the gas cap. This is very common in my experience.

If it is a different sensor try locating it, and reseating the plug, maybe with dielectric grease. If that doesn't work, and you can reach it easily, replace the sensor, or at least you will know what sensor is the culprit.

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Anthony Carrico

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