There are three ways to reset a check engine light.
1. Disconnect the battery, wait approximately 30 minutes, reconnect the battery. This resets the cars computer which also reset the check engine light. On newer OBD (on-board diagnostic) compliant vehicles this usually does not work. See step 2.
2. Reset using an OBD II reader. When you hook an OBD II code reader up to your vehicle, you can reset the computer using the code reader.
3. Fixing the problem. Generally the check engine light comes on for a reason. Usually it is emission related (sensors, gas cap) or electrical (faulty wiring). In this case the way to reset the check engine light is to fix the problem
Another Possible Choice:
At least in my car a 2003 impala to clear the check engine light I pulled a fuse called the PCM fuse from my underhood fuse box overnight and put it back in when I left for work and it cleared. I only do this after getting the code pulled at autozone for free and attempting to fix the problem, in this case it was a EVAP code that I fixed by locating a loose vacuum line. Anyway after a driving cycle which seems to be 90 mi in my car the light will return if the problem is not resolved.
The check engine light is reset with a scan tool after repairing the cause of the fault.The check engine light is reset with a scan tool after repairing the cause of the fault.
The check engine light has to be reset with a OBD scan tool
You reset the check engine light with a scan tool after repairing the failure.
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The check engine light comes on in a car when there is a problem with the engine. It will go off or be reset when the problem is fixed.
You need a scan tool to properly reset the check engine light.
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There is no reset button for the check engine light. It must be reset with an OBD scan tool.
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The check engine light can be reset two ways. 1) If the problem resolves itself, the check engine light will reset itself after a certain amount of cold starts of the car on the on board computer system. 2) You need an OBD reader that has the reset check engine light capability.