<human>: My car's check engine will come on for like 3 months and then turn off for a couple weeks. I had my car looked at and my family mechanic told me that a sensor in my car was broken and that's why it does this. I don't remember the details of what he told me or if it was too expensive to fix, but here in Georgia we have to pass an emissions test every year in order to renew our tag. If the check engine light in on, you fail, have to spend money to get whatever fixed, then spend more money on another test. Last year my mechanic managed to get the light to go off for my car to pass an emissions test but it came on about a couple hours later. It was about $150 bucks to get him to do this for me. I was wondering if there is a way to turn off the light...or if anyone knows a solution to this that my mechanic may not be telling me?

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<bot>: I need to pass an emissions test, but my check engine light is on due to a broken sensor that is too expensive to replace. What is the cheapest way to get around this?