My check engine light came on.I have no overheating,no change in temperture gauges and all my fluids are ok.I had Autozone do one of their test with a hand held device and was told it was a thermostat...
My car has 170000 miles.
My car has an automatic transmission.
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There are several possible reasons for a check engine light to come on. Typically, when the check engine light appears, the first step is to pull the diagnostic codes out of the computer with a scan tool, like you did. The codes you get will give a mechanic an idea of where to start with the diagnostic process. A common misconception is that pulling these diagnostic codes will tell you exactly what parts need to be replaced. In reality, the codes are only a starting point for further diagnosis. I’m not saying that the thermostat does not need to be replaced, but a given code could actually have several root causes. Each diagnostic trouble code will have a test associated with it to determine exactly what is causing the code to be set. If this is something you need a hand in diagnosing and/or repairing, contact a certified mechanic, like those available at YourMechanic.com.
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